./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_search-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 2329fc70 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_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 --- 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-2329fc7 [2022-12-13 19:27:37,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:27:37,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:27:37,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:27:37,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:27:37,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:27:37,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:27:37,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:27:37,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:27:37,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:27:37,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:27:37,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:27:37,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:27:37,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:27:37,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:27:37,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:27:37,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:27:37,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:27:37,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:27:37,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:27:37,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:27:37,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:27:37,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:27:37,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:27:37,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:27:37,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:27:37,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:27:37,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:27:37,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:27:37,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:27:37,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:27:37,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:27:37,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:27:37,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:27:37,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:27:37,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:27:37,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:27:37,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:27:37,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:27:37,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:27:37,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:27:37,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-12-13 19:27:37,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:27:37,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:27:37,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:27:37,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:27:37,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:27:37,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:27:37,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:27:37,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:27:37,524 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:27:37,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:27:37,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:27:37,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:27:37,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:27:37,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:27:37,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:27:37,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 19:27:37,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 19:27:37,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:27:37,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:27:37,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:27:37,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:27:37,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:27:37,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:27:37,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:27:37,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:27:37,527 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:27:37,527 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 [2022-12-13 19:27:37,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:27:37,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:27:37,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:27:37,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:27:37,707 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:27:37,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-properties/list_search-1.i [2022-12-13 19:27:40,263 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:27:40,447 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:27:40,448 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/sv-benchmarks/c/list-properties/list_search-1.i [2022-12-13 19:27:40,457 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data/1efe5c431/ff3aff57248043d5975133a70deb7e19/FLAGc4ca52e3b [2022-12-13 19:27:40,469 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data/1efe5c431/ff3aff57248043d5975133a70deb7e19 [2022-12-13 19:27:40,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:27:40,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:27:40,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:27:40,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:27:40,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:27:40,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:27:40" (1/1) ... [2022-12-13 19:27:40,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdde75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:40, skipping insertion in model container [2022-12-13 19:27:40,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:27:40" (1/1) ... [2022-12-13 19:27:40,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:27:40,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:27:40,611 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-12-13 19:27:40,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:27:40,696 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) [2022-12-13 19:27:40,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@280f6ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:40, skipping insertion in model container [2022-12-13 19:27:40,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:27:40,697 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 19:27:40,698 INFO L158 Benchmark]: Toolchain (without parser) took 225.32ms. Allocated memory is still 111.1MB. Free memory was 69.6MB in the beginning and 57.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:27:40,698 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 111.1MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:27:40,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.11ms. Allocated memory is still 111.1MB. Free memory was 69.1MB in the beginning and 57.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:27:40,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 111.1MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.11ms. Allocated memory is still 111.1MB. Free memory was 69.1MB in the beginning and 57.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 542]: 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_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 --- 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-2329fc7 [2022-12-13 19:27:41,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:27:41,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:27:42,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:27:42,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:27:42,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:27:42,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:27:42,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:27:42,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:27:42,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:27:42,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:27:42,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:27:42,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:27:42,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:27:42,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:27:42,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:27:42,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:27:42,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:27:42,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:27:42,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:27:42,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:27:42,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:27:42,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:27:42,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:27:42,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:27:42,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:27:42,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:27:42,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:27:42,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:27:42,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:27:42,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:27:42,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:27:42,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:27:42,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:27:42,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:27:42,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:27:42,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:27:42,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:27:42,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:27:42,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:27:42,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:27:42,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2022-12-13 19:27:42,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:27:42,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:27:42,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:27:42,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:27:42,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:27:42,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:27:42,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:27:42,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:27:42,056 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:27:42,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:27:42,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:27:42,058 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:27:42,058 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:27:42,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:27:42,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:27:42,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:27:42,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:27:42,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:27:42,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:27:42,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:27:42,059 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:27:42,060 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 [2022-12-13 19:27:42,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:27:42,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:27:42,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:27:42,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:27:42,306 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:27:42,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-properties/list_search-1.i [2022-12-13 19:27:44,855 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:27:45,064 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:27:45,064 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/sv-benchmarks/c/list-properties/list_search-1.i [2022-12-13 19:27:45,075 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data/6914d7629/0e20acaefff74508be9f20f1969225f6/FLAG437700e21 [2022-12-13 19:27:45,415 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/data/6914d7629/0e20acaefff74508be9f20f1969225f6 [2022-12-13 19:27:45,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:27:45,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:27:45,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:27:45,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:27:45,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:27:45,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da0f76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45, skipping insertion in model container [2022-12-13 19:27:45,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:27:45,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:27:45,580 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-12-13 19:27:45,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:27:45,694 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 19:27:45,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:27:45,704 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-12-13 19:27:45,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:27:45,735 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:27:45,750 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-12-13 19:27:45,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:27:45,786 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:27:45,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45 WrapperNode [2022-12-13 19:27:45,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:27:45,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:27:45,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:27:45,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:27:45,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,819 INFO L138 Inliner]: procedures = 128, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-12-13 19:27:45,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:27:45,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:27:45,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:27:45,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:27:45,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:27:45,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:27:45,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:27:45,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:27:45,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (1/1) ... [2022-12-13 19:27:45,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:27:45,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:27:45,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:27:45,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:27:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 19:27:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:27:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:27:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:27:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:27:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2022-12-13 19:27:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2022-12-13 19:27:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:27:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 19:27:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:27:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:27:45,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:27:46,003 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:27:46,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:27:46,253 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:27:46,257 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:27:46,257 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 19:27:46,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:27:46 BoogieIcfgContainer [2022-12-13 19:27:46,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:27:46,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:27:46,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:27:46,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:27:46,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:27:45" (1/3) ... [2022-12-13 19:27:46,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6073c4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:27:46, skipping insertion in model container [2022-12-13 19:27:46,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:45" (2/3) ... [2022-12-13 19:27:46,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6073c4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:27:46, skipping insertion in model container [2022-12-13 19:27:46,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:27:46" (3/3) ... [2022-12-13 19:27:46,265 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2022-12-13 19:27:46,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:27:46,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-12-13 19:27:46,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:27:46,314 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=PETRI_NET, 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;@4c678402, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:27:46,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 19:27:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:27:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 19:27:46,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:46,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:27:46,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 48806309, now seen corresponding path program 1 times [2022-12-13 19:27:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:46,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914644568] [2022-12-13 19:27:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:46,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:46,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 19:27:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:27:46,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:46,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:27:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:27:46,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:46,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:46,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914644568] [2022-12-13 19:27:46,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914644568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:46,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:46,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:27:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59415480] [2022-12-13 19:27:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:27:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:27:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:27:46,504 INFO L87 Difference]: Start difference. First operand has 63 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:27:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:46,607 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-12-13 19:27:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:27:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 19:27:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:46,614 INFO L225 Difference]: With dead ends: 59 [2022-12-13 19:27:46,614 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 19:27:46,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:27:46,617 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:46,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 90 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:27:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 19:27:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-13 19:27:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 51 states have internal predecessors, (55), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:27:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2022-12-13 19:27:46,643 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 5 [2022-12-13 19:27:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:46,643 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2022-12-13 19:27:46,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:27:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2022-12-13 19:27:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 19:27:46,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:46,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:27:46,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:27:46,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:46,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash 48806310, now seen corresponding path program 1 times [2022-12-13 19:27:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:46,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240383071] [2022-12-13 19:27:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:46,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:46,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:46,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:46,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 19:27:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:47,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:27:47,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:47,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 19:27:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:27:47,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:47,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:47,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240383071] [2022-12-13 19:27:47,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240383071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:47,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:47,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:27:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273648078] [2022-12-13 19:27:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:27:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:27:47,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:27:47,069 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:27:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:47,150 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-12-13 19:27:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:27:47,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 19:27:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:47,152 INFO L225 Difference]: With dead ends: 53 [2022-12-13 19:27:47,152 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 19:27:47,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:27:47,154 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:47,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:27:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 19:27:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-12-13 19:27:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.457142857142857) internal successors, (51), 47 states have internal predecessors, (51), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:27:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-12-13 19:27:47,160 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 5 [2022-12-13 19:27:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:47,160 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-12-13 19:27:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:27:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-12-13 19:27:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 19:27:47,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:47,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:47,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 19:27:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:47,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1546335105, now seen corresponding path program 1 times [2022-12-13 19:27:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:47,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000147195] [2022-12-13 19:27:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:47,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:47,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:47,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 19:27:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:47,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:27:47,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:27:47,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:27:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 19:27:47,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:47,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000147195] [2022-12-13 19:27:47,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000147195] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:27:47,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:27:47,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-12-13 19:27:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016549465] [2022-12-13 19:27:47,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:27:47,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:27:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:27:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:27:47,715 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:27:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:47,952 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-12-13 19:27:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:27:47,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2022-12-13 19:27:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:47,954 INFO L225 Difference]: With dead ends: 72 [2022-12-13 19:27:47,955 INFO L226 Difference]: Without dead ends: 72 [2022-12-13 19:27:47,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:27:47,956 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 95 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:47,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 162 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:27:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-13 19:27:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2022-12-13 19:27:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 53 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 19:27:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-12-13 19:27:47,964 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 41 [2022-12-13 19:27:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:47,964 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-12-13 19:27:47,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:27:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-12-13 19:27:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 19:27:47,965 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:47,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:47,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-13 19:27:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:48,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1413963380, now seen corresponding path program 1 times [2022-12-13 19:27:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:48,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098262668] [2022-12-13 19:27:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:48,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:48,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:48,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:48,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 19:27:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:48,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:27:48,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:48,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:27:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:27:48,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:48,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098262668] [2022-12-13 19:27:48,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098262668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:48,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:48,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500797787] [2022-12-13 19:27:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:48,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:27:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:27:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:48,528 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:48,750 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2022-12-13 19:27:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:27:48,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-12-13 19:27:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:48,751 INFO L225 Difference]: With dead ends: 90 [2022-12-13 19:27:48,751 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 19:27:48,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:27:48,752 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 99 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:48,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:27:48,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 19:27:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 65. [2022-12-13 19:27:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.425531914893617) internal successors, (67), 58 states have internal predecessors, (67), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 19:27:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2022-12-13 19:27:48,756 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 44 [2022-12-13 19:27:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:48,757 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2022-12-13 19:27:48,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2022-12-13 19:27:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 19:27:48,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:48,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:48,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 19:27:48,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:48,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1413963379, now seen corresponding path program 1 times [2022-12-13 19:27:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:48,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634954124] [2022-12-13 19:27:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:48,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:48,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:48,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:48,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 19:27:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:27:49,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:49,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 19:27:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:27:49,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:49,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:49,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634954124] [2022-12-13 19:27:49,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634954124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:49,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:49,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608769121] [2022-12-13 19:27:49,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:49,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:27:49,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:27:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:49,235 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:49,469 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2022-12-13 19:27:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:27:49,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-12-13 19:27:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:49,471 INFO L225 Difference]: With dead ends: 106 [2022-12-13 19:27:49,471 INFO L226 Difference]: Without dead ends: 106 [2022-12-13 19:27:49,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:27:49,472 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 104 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:49,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 91 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:27:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-12-13 19:27:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2022-12-13 19:27:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 63 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 19:27:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2022-12-13 19:27:49,478 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 44 [2022-12-13 19:27:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:49,478 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2022-12-13 19:27:49,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2022-12-13 19:27:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 19:27:49,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:49,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:49,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 19:27:49,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:49,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1662023696, now seen corresponding path program 1 times [2022-12-13 19:27:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:49,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634428846] [2022-12-13 19:27:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:49,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:49,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:49,688 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:49,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 19:27:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:27:49,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:27:49,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:49,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634428846] [2022-12-13 19:27:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634428846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:49,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:27:49,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687504512] [2022-12-13 19:27:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:27:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:27:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:27:49,918 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:50,130 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2022-12-13 19:27:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:27:50,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2022-12-13 19:27:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:50,131 INFO L225 Difference]: With dead ends: 106 [2022-12-13 19:27:50,132 INFO L226 Difference]: Without dead ends: 106 [2022-12-13 19:27:50,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:27:50,133 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 110 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:50,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 164 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:27:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-12-13 19:27:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2022-12-13 19:27:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 19:27:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2022-12-13 19:27:50,139 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 47 [2022-12-13 19:27:50,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:50,139 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2022-12-13 19:27:50,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2022-12-13 19:27:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 19:27:50,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:50,141 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:50,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 19:27:50,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:50,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:50,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1825916083, now seen corresponding path program 1 times [2022-12-13 19:27:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:50,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40505757] [2022-12-13 19:27:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:50,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:50,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:50,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:50,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 19:27:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:50,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:27:50,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:50,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 19:27:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:27:50,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:50,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:50,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40505757] [2022-12-13 19:27:50,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40505757] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:50,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:50,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:27:50,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970252394] [2022-12-13 19:27:50,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:27:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:27:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:27:50,702 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:51,091 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2022-12-13 19:27:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:27:51,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-12-13 19:27:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:51,093 INFO L225 Difference]: With dead ends: 105 [2022-12-13 19:27:51,093 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 19:27:51,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:27:51,094 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 150 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:51,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 139 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:27:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 19:27:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2022-12-13 19:27:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 66 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 19:27:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-12-13 19:27:51,098 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 49 [2022-12-13 19:27:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:51,099 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-12-13 19:27:51,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-12-13 19:27:51,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 19:27:51,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:51,099 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:51,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 19:27:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:51,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1825916084, now seen corresponding path program 1 times [2022-12-13 19:27:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:51,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978003904] [2022-12-13 19:27:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:51,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:51,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:51,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:51,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 19:27:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:51,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:27:51,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:51,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:27:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:27:51,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:51,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:51,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978003904] [2022-12-13 19:27:51,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978003904] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:51,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:51,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:27:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315634902] [2022-12-13 19:27:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:51,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:27:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:27:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:27:51,551 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:51,838 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2022-12-13 19:27:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:27:51,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-12-13 19:27:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:51,840 INFO L225 Difference]: With dead ends: 96 [2022-12-13 19:27:51,840 INFO L226 Difference]: Without dead ends: 96 [2022-12-13 19:27:51,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:27:51,841 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 125 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:51,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 132 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:27:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-13 19:27:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-12-13 19:27:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 69 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 19:27:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2022-12-13 19:27:51,846 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 49 [2022-12-13 19:27:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:51,846 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2022-12-13 19:27:51,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:27:51,846 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2022-12-13 19:27:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 19:27:51,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:51,846 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:51,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 19:27:52,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:52,049 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1986857552, now seen corresponding path program 1 times [2022-12-13 19:27:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:52,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839121475] [2022-12-13 19:27:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:52,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:52,056 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:52,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 19:27:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:52,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 19:27:52,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:52,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:27:52,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:27:52,617 INFO L321 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2022-12-13 19:27:52,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-12-13 19:27:52,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 19:27:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:27:52,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:27:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:27:53,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:53,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839121475] [2022-12-13 19:27:53,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839121475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:27:53,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:27:53,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2022-12-13 19:27:53,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754828078] [2022-12-13 19:27:53,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:27:53,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:27:53,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:27:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:27:53,111 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:27:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:54,294 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-12-13 19:27:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 19:27:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-12-13 19:27:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:54,296 INFO L225 Difference]: With dead ends: 127 [2022-12-13 19:27:54,296 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 19:27:54,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:27:54,297 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 377 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:54,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 250 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 19:27:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 19:27:54,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 83. [2022-12-13 19:27:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 76 states have internal predecessors, (87), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:27:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2022-12-13 19:27:54,303 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 51 [2022-12-13 19:27:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:54,303 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2022-12-13 19:27:54,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:27:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2022-12-13 19:27:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 19:27:54,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:54,304 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:27:54,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 19:27:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:54,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:27:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1986857553, now seen corresponding path program 1 times [2022-12-13 19:27:54,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:27:54,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221839692] [2022-12-13 19:27:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:54,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:27:54,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:27:54,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:27:54,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 19:27:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:54,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 19:27:54,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:54,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 19:27:54,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:27:54,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:27:55,066 INFO L321 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2022-12-13 19:27:55,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:27:55,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:27:55,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 19:27:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:27:55,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:27:56,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:27:56,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221839692] [2022-12-13 19:27:56,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221839692] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:27:56,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [318160598] [2022-12-13 19:27:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:56,026 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 19:27:56,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 19:27:56,027 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 19:27:56,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-12-13 19:27:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:56,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 19:27:56,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:56,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:27:56,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 19:27:56,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:27:56,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:27:57,038 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-12-13 19:27:57,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 30 [2022-12-13 19:27:57,056 INFO L321 Elim1Store]: treesize reduction 6, result has 62.5 percent of original size [2022-12-13 19:27:57,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-12-13 19:27:57,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:27:57,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-13 19:27:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:27:57,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:27:59,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [318160598] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:27:59,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:27:59,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-12-13 19:27:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880016082] [2022-12-13 19:27:59,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:27:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:27:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:27:59,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:27:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=580, Unknown=1, NotChecked=0, Total=650 [2022-12-13 19:27:59,790 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:28:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:02,215 INFO L93 Difference]: Finished difference Result 155 states and 168 transitions. [2022-12-13 19:28:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:28:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2022-12-13 19:28:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:02,217 INFO L225 Difference]: With dead ends: 155 [2022-12-13 19:28:02,217 INFO L226 Difference]: Without dead ends: 155 [2022-12-13 19:28:02,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=271, Invalid=1450, Unknown=1, NotChecked=0, Total=1722 [2022-12-13 19:28:02,218 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 464 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:02,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 308 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 19:28:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-13 19:28:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 86. [2022-12-13 19:28:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 79 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:28:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2022-12-13 19:28:02,221 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 51 [2022-12-13 19:28:02,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:02,221 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2022-12-13 19:28:02,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:28:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2022-12-13 19:28:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 19:28:02,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:02,222 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:02,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 19:28:02,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:02,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 19:28:02,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:28:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash -105219752, now seen corresponding path program 1 times [2022-12-13 19:28:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:02,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532742127] [2022-12-13 19:28:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:02,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:02,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:02,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 19:28:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:02,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:28:02,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:02,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-12-13 19:28:02,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-12-13 19:28:03,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:03,009 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 13 [2022-12-13 19:28:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:28:03,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:28:03,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:28:03,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532742127] [2022-12-13 19:28:03,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532742127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:03,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:28:03,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:28:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724458794] [2022-12-13 19:28:03,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:03,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:28:03,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:28:03,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:28:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:28:03,044 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:28:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:03,383 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2022-12-13 19:28:03,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:28:03,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2022-12-13 19:28:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:03,384 INFO L225 Difference]: With dead ends: 86 [2022-12-13 19:28:03,384 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 19:28:03,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:28:03,385 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 56 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:03,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 222 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:28:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 19:28:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2022-12-13 19:28:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:28:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2022-12-13 19:28:03,388 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 52 [2022-12-13 19:28:03,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:03,389 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2022-12-13 19:28:03,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:28:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2022-12-13 19:28:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 19:28:03,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:03,390 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-12-13 19:28:03,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:03,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:03,591 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:28:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1534863564, now seen corresponding path program 1 times [2022-12-13 19:28:03,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:03,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34047714] [2022-12-13 19:28:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:03,597 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:03,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 19:28:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:03,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 19:28:03,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:03,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:03,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-13 19:28:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:28:03,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:28:04,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:28:04,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34047714] [2022-12-13 19:28:04,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34047714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:04,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:28:04,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 18 [2022-12-13 19:28:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130731633] [2022-12-13 19:28:04,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:04,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 19:28:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:28:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 19:28:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:28:04,223 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:28:05,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:05,081 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2022-12-13 19:28:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 19:28:05,082 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-12-13 19:28:05,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:05,083 INFO L225 Difference]: With dead ends: 123 [2022-12-13 19:28:05,083 INFO L226 Difference]: Without dead ends: 123 [2022-12-13 19:28:05,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 19:28:05,084 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 388 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:05,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 311 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:28:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-13 19:28:05,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 82. [2022-12-13 19:28:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.296875) internal successors, (83), 75 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:28:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2022-12-13 19:28:05,088 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 54 [2022-12-13 19:28:05,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:05,088 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2022-12-13 19:28:05,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 19:28:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2022-12-13 19:28:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 19:28:05,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:05,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:05,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 19:28:05,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:05,290 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:28:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash 527248649, now seen corresponding path program 1 times [2022-12-13 19:28:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:05,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738054049] [2022-12-13 19:28:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:05,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:05,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:05,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:05,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 19:28:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 19:28:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:05,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:05,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:28:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:28:05,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:05,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-12-13 19:28:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:28:07,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:28:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738054049] [2022-12-13 19:28:07,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738054049] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:07,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:28:07,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2022-12-13 19:28:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240357260] [2022-12-13 19:28:07,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 19:28:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:28:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 19:28:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-12-13 19:28:07,047 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:28:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:10,023 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2022-12-13 19:28:10,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 19:28:10,023 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 56 [2022-12-13 19:28:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:10,025 INFO L225 Difference]: With dead ends: 139 [2022-12-13 19:28:10,025 INFO L226 Difference]: Without dead ends: 139 [2022-12-13 19:28:10,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=383, Invalid=1969, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 19:28:10,026 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 361 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:10,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 454 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 19:28:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-13 19:28:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 82. [2022-12-13 19:28:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.28125) internal successors, (82), 75 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:28:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2022-12-13 19:28:10,029 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 56 [2022-12-13 19:28:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:10,029 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2022-12-13 19:28:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:28:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2022-12-13 19:28:10,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 19:28:10,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:10,030 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:10,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:10,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:10,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:28:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash -69599988, now seen corresponding path program 2 times [2022-12-13 19:28:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:10,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698199981] [2022-12-13 19:28:10,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:10,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:10,237 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:10,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 19:28:10,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:10,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:10,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 19:28:10,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:10,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:28:10,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:11,011 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-12-13 19:28:11,012 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 39 [2022-12-13 19:28:11,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:11,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:28:11,360 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-13 19:28:11,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-12-13 19:28:11,373 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 19:28:11,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-13 19:28:11,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-12-13 19:28:11,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:28:12,085 INFO L321 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-12-13 19:28:12,086 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 87 [2022-12-13 19:28:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:12,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:12,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:12,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-12-13 19:28:14,775 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_113 (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv0 1) (bvadd (select (store |c_#valid| v_~head~0.base_113 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_113 v_arrayElimArr_2) c_~head~0.base) (bvadd c_~head~0.offset (_ bv4 32)))) (_ bv1 1))) (not (= (select v_arrayElimArr_2 (_ bv4 32)) c_~head~0.base)))) is different from false [2022-12-13 19:28:14,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:28:14,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698199981] [2022-12-13 19:28:14,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698199981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:14,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1908451004] [2022-12-13 19:28:14,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:14,778 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 19:28:14,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 19:28:14,779 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 19:28:14,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-12-13 19:28:15,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:15,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:15,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 19:28:15,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:15,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:28:15,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:15,537 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-12-13 19:28:15,537 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 39 [2022-12-13 19:28:15,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:15,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:28:16,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:16,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-12-13 19:28:16,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:16,208 INFO L321 Elim1Store]: treesize reduction 52, result has 38.1 percent of original size [2022-12-13 19:28:16,208 INFO L350 Elim1Store]: Elim1 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 42 treesize of output 65 [2022-12-13 19:28:16,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:28:17,050 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 19:28:17,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2022-12-13 19:28:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:17,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:17,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:17,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-12-13 19:28:18,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1908451004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:18,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:28:18,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2022-12-13 19:28:18,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77156329] [2022-12-13 19:28:18,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:18,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 19:28:18,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:28:18,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 19:28:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1336, Unknown=15, NotChecked=74, Total=1560 [2022-12-13 19:28:18,845 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 19:28:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:23,322 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2022-12-13 19:28:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 19:28:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2022-12-13 19:28:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:23,323 INFO L225 Difference]: With dead ends: 139 [2022-12-13 19:28:23,323 INFO L226 Difference]: Without dead ends: 139 [2022-12-13 19:28:23,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=375, Invalid=2907, Unknown=28, NotChecked=112, Total=3422 [2022-12-13 19:28:23,324 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 482 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 37 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:23,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 380 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 938 Invalid, 9 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 19:28:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-13 19:28:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 87. [2022-12-13 19:28:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 80 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:28:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2022-12-13 19:28:23,327 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 58 [2022-12-13 19:28:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:23,327 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2022-12-13 19:28:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 19:28:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2022-12-13 19:28:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 19:28:23,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:23,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:23,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 19:28:23,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:23,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 19:28:23,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:28:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash -69599987, now seen corresponding path program 2 times [2022-12-13 19:28:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:23,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917286156] [2022-12-13 19:28:23,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:23,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:23,733 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:23,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 19:28:24,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:24,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:24,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 19:28:24,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:24,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 19:28:24,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:28:24,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:24,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:24,551 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-12-13 19:28:24,551 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 39 [2022-12-13 19:28:24,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:28:24,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:28:24,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:28:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:25,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-12-13 19:28:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:25,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 19:28:25,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:25,084 INFO L321 Elim1Store]: treesize reduction 6, result has 70.0 percent of original size [2022-12-13 19:28:25,084 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 28 [2022-12-13 19:28:25,096 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 24 [2022-12-13 19:28:25,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 19:28:25,844 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-13 19:28:25,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2022-12-13 19:28:25,861 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 19:28:25,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-12-13 19:28:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:26,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:27,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:27,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2022-12-13 19:28:27,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:27,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2022-12-13 19:28:27,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-13 19:28:27,652 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd c_~head~0.offset (_ bv4 32)))) (and (forall ((v_~head~0.base_125 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_~head~0.base_125))) (forall ((v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= c_~head~0.offset (select v_arrayElimArr_8 (_ bv4 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_125 v_arrayElimArr_8) c_~head~0.base) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))))) (forall ((v_~head~0.base_125 (_ BitVec 32))) (or (forall ((v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_arrayElimArr_7 (Array (_ BitVec 32) (_ BitVec 32)))) (or (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_125 v_arrayElimArr_8) c_~head~0.base) .cse1)) (select (store |c_#length| v_~head~0.base_125 (_ bv8 32)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_125 v_arrayElimArr_7) c_~head~0.base) .cse1))) (not (= (select v_arrayElimArr_7 (_ bv4 32)) c_~head~0.base)))) (not (= c_~head~0.offset (select v_arrayElimArr_8 (_ bv4 32)))))) (not (= (_ bv0 1) (select |c_#valid| v_~head~0.base_125))))))) is different from false [2022-12-13 19:28:27,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:28:27,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917286156] [2022-12-13 19:28:27,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917286156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:27,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1417737990] [2022-12-13 19:28:27,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:27,659 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 19:28:27,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 19:28:27,659 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 19:28:27,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-13 19:28:28,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:28,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:28,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 19:28:28,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:28,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:28:28,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 19:28:28,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:28,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:28,529 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-12-13 19:28:28,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 30 [2022-12-13 19:28:28,562 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-12-13 19:28:28,562 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 39 [2022-12-13 19:28:28,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:28:28,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:28:28,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:28,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 19:28:28,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:28,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-12-13 19:28:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:28,958 INFO L321 Elim1Store]: treesize reduction 6, result has 70.0 percent of original size [2022-12-13 19:28:28,958 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 28 [2022-12-13 19:28:28,969 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 24 [2022-12-13 19:28:29,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 19:28:29,551 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-13 19:28:29,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2022-12-13 19:28:29,564 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 19:28:29,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-12-13 19:28:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:28:29,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:30,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:30,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2022-12-13 19:28:30,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:30,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2022-12-13 19:28:30,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-13 19:28:32,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1417737990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:32,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:28:32,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2022-12-13 19:28:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040424201] [2022-12-13 19:28:32,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:32,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:28:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:28:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:28:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=638, Unknown=5, NotChecked=50, Total=756 [2022-12-13 19:28:32,700 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 19:28:43,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:28:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:48,332 INFO L93 Difference]: Finished difference Result 166 states and 177 transitions. [2022-12-13 19:28:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 19:28:48,333 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2022-12-13 19:28:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:48,334 INFO L225 Difference]: With dead ends: 166 [2022-12-13 19:28:48,334 INFO L226 Difference]: Without dead ends: 166 [2022-12-13 19:28:48,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=299, Invalid=2131, Unknown=24, NotChecked=96, Total=2550 [2022-12-13 19:28:48,335 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 340 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 24 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:48,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 496 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1060 Invalid, 9 Unknown, 0 Unchecked, 8.3s Time] [2022-12-13 19:28:48,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-12-13 19:28:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 90. [2022-12-13 19:28:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 83 states have internal predecessors, (93), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:28:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2022-12-13 19:28:48,340 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 58 [2022-12-13 19:28:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:48,340 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2022-12-13 19:28:48,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 19:28:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2022-12-13 19:28:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 19:28:48,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:48,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:48,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 19:28:48,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-12-13 19:28:48,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 19:28:48,743 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:28:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:48,744 INFO L85 PathProgramCache]: Analyzing trace with hash 569105948, now seen corresponding path program 1 times [2022-12-13 19:28:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:48,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100754721] [2022-12-13 19:28:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:48,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:48,750 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:48,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 19:28:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:49,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 19:28:49,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:49,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:49,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:49,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:49,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-12-13 19:28:49,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:49,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:49,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:49,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:49,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:49,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 60 [2022-12-13 19:28:50,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:50,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:50,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:50,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-12-13 19:28:50,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:50,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:50,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:50,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:50,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:50,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 56 [2022-12-13 19:28:50,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:50,616 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-12-13 19:28:50,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2022-12-13 19:28:51,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2022-12-13 19:28:51,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:28:52,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:52,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 113 treesize of output 81 [2022-12-13 19:28:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:28:52,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:54,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:54,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 75 [2022-12-13 19:28:54,476 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_137 (_ BitVec 32)) (v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 8)))) (or (not (= (select v_arrayElimArr_15 (_ bv2 32)) (_ bv0 8))) (not (= (_ bv0 8) (select v_arrayElimArr_15 (_ bv1 32)))) (not (= (select v_arrayElimArr_15 (_ bv3 32)) (_ bv0 8))) (not (= (select v_arrayElimArr_15 (_ bv0 32)) (_ bv3 8))) (not (= (let ((.cse0 (select (store |c_#memory_int| v_~head~0.base_137 v_arrayElimArr_15) c_~head~0.base))) (concat (concat (concat (select .cse0 (bvadd c_~head~0.offset (_ bv3 32))) (select .cse0 (bvadd c_~head~0.offset (_ bv2 32)))) (select .cse0 (bvadd c_~head~0.offset (_ bv1 32)))) (select .cse0 c_~head~0.offset))) (_ bv2 32))))) is different from false [2022-12-13 19:28:54,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:28:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100754721] [2022-12-13 19:28:54,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100754721] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [160199028] [2022-12-13 19:28:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:54,481 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 19:28:54,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 19:28:54,482 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 19:28:54,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-13 19:28:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 19:28:55,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:55,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:28:55,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:55,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:55,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-12-13 19:28:55,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:55,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:55,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:55,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:55,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2022-12-13 19:28:56,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:56,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:28:57,373 INFO L321 Elim1Store]: treesize reduction 6, result has 62.5 percent of original size [2022-12-13 19:28:57,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-12-13 19:28:57,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 67 [2022-12-13 19:28:58,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2022-12-13 19:28:58,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2022-12-13 19:28:58,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:58,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:58,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:58,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:58,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 19:28:58,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:58,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 19:28:58,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:58,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 19:28:58,948 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:28:58,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 60 treesize of output 34 [2022-12-13 19:28:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 19:28:59,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:59,932 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_143 (_ BitVec 32)) (v_ArrVal_2652 (Array (_ BitVec 32) (_ BitVec 8)))) (or (not (= (let ((.cse0 (select (store |c_#memory_int| v_~head~0.base_143 v_ArrVal_2652) c_~head~0.base))) (concat (concat (concat (select .cse0 (bvadd c_~head~0.offset (_ bv3 32))) (select .cse0 (bvadd c_~head~0.offset (_ bv2 32)))) (select .cse0 (bvadd c_~head~0.offset (_ bv1 32)))) (select .cse0 c_~head~0.offset))) (_ bv2 32))) (not (= (select |c_#valid| v_~head~0.base_143) (_ bv0 1))))) is different from false [2022-12-13 19:28:59,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [160199028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:59,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:28:59,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2022-12-13 19:28:59,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049903639] [2022-12-13 19:28:59,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:59,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 19:28:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:28:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 19:28:59,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1376, Unknown=5, NotChecked=150, Total=1640 [2022-12-13 19:28:59,938 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:29:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:10,664 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2022-12-13 19:29:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:29:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2022-12-13 19:29:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:10,666 INFO L225 Difference]: With dead ends: 98 [2022-12-13 19:29:10,666 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 19:29:10,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=301, Invalid=2778, Unknown=9, NotChecked=218, Total=3306 [2022-12-13 19:29:10,667 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 142 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 20 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:10,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 556 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 777 Invalid, 8 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 19:29:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 19:29:10,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2022-12-13 19:29:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 83 states have internal predecessors, (92), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:29:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2022-12-13 19:29:10,671 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 59 [2022-12-13 19:29:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:10,672 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2022-12-13 19:29:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 19:29:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2022-12-13 19:29:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 19:29:10,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:10,673 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:29:10,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 19:29:10,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-12-13 19:29:11,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 19:29:11,075 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:29:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1021799568, now seen corresponding path program 2 times [2022-12-13 19:29:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:29:11,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980042970] [2022-12-13 19:29:11,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:29:11,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:29:11,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:29:11,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:29:11,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 19:29:11,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:29:11,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:29:11,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 19:29:11,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:29:11,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:29:12,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:29:12,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:29:12,822 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-13 19:29:12,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 29 [2022-12-13 19:29:13,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:29:13,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:29:13,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2022-12-13 19:29:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:29:13,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:29:14,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:29:14,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-12-13 19:29:15,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:29:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980042970] [2022-12-13 19:29:15,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980042970] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:29:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1782999199] [2022-12-13 19:29:15,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:29:15,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 19:29:15,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 19:29:15,018 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 19:29:15,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-13 19:29:15,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:29:15,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:29:15,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 19:29:15,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:29:15,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:29:15,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:29:17,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:29:17,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:29:17,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:29:17,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 19:29:17,560 INFO L321 Elim1Store]: treesize reduction 6, result has 62.5 percent of original size [2022-12-13 19:29:17,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-12-13 19:29:18,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 19:29:18,595 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 19:29:18,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2022-12-13 19:29:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:29:18,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:29:19,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:29:19,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-12-13 19:29:19,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1782999199] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:29:19,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:29:19,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 35 [2022-12-13 19:29:19,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092266504] [2022-12-13 19:29:19,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:29:19,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 19:29:19,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:29:19,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 19:29:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1495, Unknown=22, NotChecked=0, Total=1640 [2022-12-13 19:29:19,689 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 19:29:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:30,691 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2022-12-13 19:29:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 19:29:30,691 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 61 [2022-12-13 19:29:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:30,692 INFO L225 Difference]: With dead ends: 135 [2022-12-13 19:29:30,692 INFO L226 Difference]: Without dead ends: 135 [2022-12-13 19:29:30,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=593, Invalid=4471, Unknown=48, NotChecked=0, Total=5112 [2022-12-13 19:29:30,696 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 353 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 37 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:30,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 684 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1326 Invalid, 7 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 19:29:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-13 19:29:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 89. [2022-12-13 19:29:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 82 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:29:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2022-12-13 19:29:30,699 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 61 [2022-12-13 19:29:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:30,699 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2022-12-13 19:29:30,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 19:29:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2022-12-13 19:29:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 19:29:30,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:30,700 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:29:30,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-12-13 19:29:30,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-12-13 19:29:31,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 19:29:31,102 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 19:29:31,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash -357187888, now seen corresponding path program 3 times [2022-12-13 19:29:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:29:31,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698578920] [2022-12-13 19:29:31,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:29:31,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:29:31,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:29:31,106 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:29:31,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28010c31-db8e-47bd-b611-4e16b65b4c87/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 19:29:31,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 19:29:31,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:29:31,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 19:29:32,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:29:32,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 19:29:32,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:29:32,535 INFO L321 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2022-12-13 19:29:32,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-12-13 19:29:33,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:29:33,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:29:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:29:33,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 19:29:33,668 INFO L321 Elim1Store]: treesize reduction 160, result has 27.6 percent of original size [2022-12-13 19:29:33,668 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 81 [2022-12-13 19:29:34,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:29:34,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 19:29:35,001 INFO L321 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-12-13 19:29:35,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 93 [2022-12-13 19:29:35,073 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-12-13 19:29:35,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 61 [2022-12-13 19:29:35,200 INFO L321 Elim1Store]: treesize reduction 108, result has 25.0 percent of original size [2022-12-13 19:29:35,200 INFO L350 Elim1Store]: Elim1 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 42 treesize of output 58 [2022-12-13 19:29:35,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-12-13 19:29:35,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 74 [2022-12-13 19:29:35,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 171 [2022-12-13 19:29:39,463 INFO L321 Elim1Store]: treesize reduction 36, result has 80.1 percent of original size [2022-12-13 19:29:39,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 292 treesize of output 374 [2022-12-13 19:31:29,625 WARN L233 SmtUtils]: Spent 42.36s on a formula simplification. DAG size of input: 620 DAG size of output: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:31:36,262 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:31:49,330 WARN L233 SmtUtils]: Spent 11.58s on a formula simplification. DAG size of input: 517 DAG size of output: 469 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 19:31:49,332 INFO L321 Elim1Store]: treesize reduction 148, result has 85.5 percent of original size [2022-12-13 19:31:49,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 21 new quantified variables, introduced 120 case distinctions, treesize of input 373 treesize of output 1058