./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- 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 [2022-12-14 08:03:08,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:03:08,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:03:08,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:03:08,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:03:08,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:03:08,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:03:08,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:03:08,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:03:08,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:03:08,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:03:08,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:03:08,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:03:08,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:03:08,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:03:08,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:03:08,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:03:08,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:03:08,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:03:08,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:03:08,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:03:08,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:03:08,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:03:08,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:03:08,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:03:08,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:03:08,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:03:08,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:03:08,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:03:08,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:03:08,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:03:08,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:03:08,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:03:08,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:03:08,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:03:08,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:03:08,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:03:08,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:03:08,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:03:08,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:03:08,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:03:08,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 08:03:08,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:03:08,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:03:08,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:03:08,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:03:08,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:03:08,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:03:08,741 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:03:08,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:03:08,741 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:03:08,742 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:03:08,742 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:03:08,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:03:08,742 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:03:08,742 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:03:08,742 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:03:08,743 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:03:08,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:03:08,743 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:03:08,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 08:03:08,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 08:03:08,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:03:08,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:03:08,744 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:03:08,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:03:08,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:03:08,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:03:08,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:03:08,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:03:08,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:03:08,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:03:08,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:03:08,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:03:08,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:03:08,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:03:08,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:03:08,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-12-14 08:03:08,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:03:08,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:03:08,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:03:08,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:03:08,946 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:03:08,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-12-14 08:03:11,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:03:11,832 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:03:11,833 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-12-14 08:03:11,845 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data/75870432e/54537c7353be4e9884f150b3b0b477f2/FLAG320603b51 [2022-12-14 08:03:11,856 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data/75870432e/54537c7353be4e9884f150b3b0b477f2 [2022-12-14 08:03:11,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:03:11,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:03:11,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:03:11,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:03:11,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:03:11,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:03:11" (1/1) ... [2022-12-14 08:03:11,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9fef56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:11, skipping insertion in model container [2022-12-14 08:03:11,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:03:11" (1/1) ... [2022-12-14 08:03:11,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:03:11,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:03:12,255 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-12-14 08:03:12,444 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:03:12,446 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-12-14 08:03:12,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:03:12,470 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) [2022-12-14 08:03:12,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2bd99a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:12, skipping insertion in model container [2022-12-14 08:03:12,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:03:12,472 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 08:03:12,474 INFO L158 Benchmark]: Toolchain (without parser) took 613.54ms. Allocated memory was 117.4MB in the beginning and 190.8MB in the end (delta: 73.4MB). Free memory was 73.1MB in the beginning and 150.9MB in the end (delta: -77.8MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2022-12-14 08:03:12,474 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:03:12,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.60ms. Allocated memory was 117.4MB in the beginning and 190.8MB in the end (delta: 73.4MB). Free memory was 72.7MB in the beginning and 150.9MB in the end (delta: -78.1MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2022-12-14 08:03:12,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.60ms. Allocated memory was 117.4MB in the beginning and 190.8MB in the end (delta: 73.4MB). Free memory was 72.7MB in the beginning and 150.9MB in the end (delta: -78.1MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- 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 [2022-12-14 08:03:13,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:03:13,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:03:13,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:03:13,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:03:13,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:03:13,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:03:13,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:03:13,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:03:13,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:03:13,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:03:13,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:03:13,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:03:13,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:03:13,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:03:13,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:03:13,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:03:13,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:03:13,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:03:13,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:03:13,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:03:13,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:03:13,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:03:13,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:03:13,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:03:13,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:03:13,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:03:13,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:03:13,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:03:13,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:03:13,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:03:13,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:03:13,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:03:13,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:03:13,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:03:13,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:03:13,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:03:13,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:03:13,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:03:13,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:03:13,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:03:13,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 08:03:13,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:03:13,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:03:13,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:03:13,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:03:13,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:03:13,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:03:13,966 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:03:13,966 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:03:13,966 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:03:13,966 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:03:13,967 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:03:13,967 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:03:13,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 08:03:13,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 08:03:13,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:03:13,968 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:03:13,968 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:03:13,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:03:13,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:03:13,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:03:13,969 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 08:03:13,969 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 08:03:13,969 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 08:03:13,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:03:13,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:03:13,970 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:03:13,970 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:03:13,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:03:13,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:03:13,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:03:13,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:03:13,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:03:13,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:03:13,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:03:13,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:03:13,972 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:03:13,972 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:03:13,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:03:13,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:03:13,973 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-12-14 08:03:14,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:03:14,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:03:14,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:03:14,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:03:14,198 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:03:14,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-12-14 08:03:16,766 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:03:17,001 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:03:17,001 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-12-14 08:03:17,015 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data/5def4511c/c626a0ded2d54a8aa3ca3c7eeacc5052/FLAG8ab2c5c25 [2022-12-14 08:03:17,029 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/data/5def4511c/c626a0ded2d54a8aa3ca3c7eeacc5052 [2022-12-14 08:03:17,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:03:17,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:03:17,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:03:17,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:03:17,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:03:17,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:17,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4daef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17, skipping insertion in model container [2022-12-14 08:03:17,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:17,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:03:17,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:03:17,390 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-12-14 08:03:17,556 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:03:17,558 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-12-14 08:03:17,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:03:17,586 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 08:03:17,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:03:17,624 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-12-14 08:03:17,715 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:03:17,718 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-12-14 08:03:17,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:03:17,730 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:03:17,752 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-12-14 08:03:17,820 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:03:17,821 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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-12-14 08:03:17,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:03:17,849 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:03:17,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17 WrapperNode [2022-12-14 08:03:17,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:03:17,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:03:17,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:03:17,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:03:17,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:17,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:17,955 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3030 [2022-12-14 08:03:17,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:03:17,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:03:17,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:03:17,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:03:17,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:17,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:17,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:17,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:18,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:18,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:18,028 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:18,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:18,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:03:18,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:03:18,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:03:18,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:03:18,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (1/1) ... [2022-12-14 08:03:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:03:18,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:03:18,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:03:18,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:03:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 08:03:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 08:03:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 08:03:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 08:03:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:03:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:03:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 08:03:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:03:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:03:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:03:18,281 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:03:18,282 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:03:18,285 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 08:03:22,951 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:03:22,968 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:03:22,969 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-12-14 08:03:22,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:03:22 BoogieIcfgContainer [2022-12-14 08:03:22,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:03:22,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:03:22,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:03:22,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:03:22,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:03:17" (1/3) ... [2022-12-14 08:03:22,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc48363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:03:22, skipping insertion in model container [2022-12-14 08:03:22,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:03:17" (2/3) ... [2022-12-14 08:03:22,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc48363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:03:22, skipping insertion in model container [2022-12-14 08:03:22,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:03:22" (3/3) ... [2022-12-14 08:03:22,979 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-2.i [2022-12-14 08:03:22,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:03:22,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-12-14 08:03:23,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:03:23,068 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f342b9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:03:23,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-12-14 08:03:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 08:03:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 08:03:23,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:23,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 08:03:23,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:23,086 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 08:03:23,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:23,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367100865] [2022-12-14 08:03:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:23,095 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 [2022-12-14 08:03:23,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:23,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:23,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:23,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:03:23,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:23,235 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 [2022-12-14 08:03:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:23,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:23,248 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:23,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367100865] [2022-12-14 08:03:23,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367100865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:23,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:23,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:03:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133749937] [2022-12-14 08:03:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:23,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:03:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:03:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:23,280 INFO L87 Difference]: Start difference. First operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:25,525 INFO L93 Difference]: Finished difference Result 2234 states and 3299 transitions. [2022-12-14 08:03:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:03:25,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 08:03:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:25,547 INFO L225 Difference]: With dead ends: 2234 [2022-12-14 08:03:25,547 INFO L226 Difference]: Without dead ends: 2232 [2022-12-14 08:03:25,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:25,550 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 1983 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2486 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:25,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2486 Valid, 2783 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 08:03:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-12-14 08:03:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2054. [2022-12-14 08:03:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1031 states have (on average 2.0417070805043647) internal successors, (2105), 2048 states have internal predecessors, (2105), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 08:03:25,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3111 transitions. [2022-12-14 08:03:25,773 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3111 transitions. Word has length 3 [2022-12-14 08:03:25,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:25,773 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3111 transitions. [2022-12-14 08:03:25,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3111 transitions. [2022-12-14 08:03:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 08:03:25,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:25,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 08:03:25,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:25,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:25,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 08:03:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:25,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480084750] [2022-12-14 08:03:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:25,977 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 [2022-12-14 08:03:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:25,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:26,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:26,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:03:26,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:26,146 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:03:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:26,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:26,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480084750] [2022-12-14 08:03:26,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480084750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:26,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:26,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:03:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46791156] [2022-12-14 08:03:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:26,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:03:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:26,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:03:26,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:26,159 INFO L87 Difference]: Start difference. First operand 2054 states and 3111 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:29,299 INFO L93 Difference]: Finished difference Result 3462 states and 5551 transitions. [2022-12-14 08:03:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:03:29,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 08:03:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:29,313 INFO L225 Difference]: With dead ends: 3462 [2022-12-14 08:03:29,313 INFO L226 Difference]: Without dead ends: 3462 [2022-12-14 08:03:29,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:29,314 INFO L413 NwaCegarLoop]: 3415 mSDtfsCounter, 1440 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:29,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 5496 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 08:03:29,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-12-14 08:03:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3176. [2022-12-14 08:03:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 1654 states have (on average 2.0151148730350665) internal successors, (3333), 3170 states have internal predecessors, (3333), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5339 transitions. [2022-12-14 08:03:29,582 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5339 transitions. Word has length 3 [2022-12-14 08:03:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:29,582 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 5339 transitions. [2022-12-14 08:03:29,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5339 transitions. [2022-12-14 08:03:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:03:29,583 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:29,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:29,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:29,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:29,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:29,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 08:03:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:29,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183740455] [2022-12-14 08:03:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:29,785 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 [2022-12-14 08:03:29,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:29,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:29,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:29,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:03:29,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:29,908 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 [2022-12-14 08:03:29,912 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 [2022-12-14 08:03:29,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:03:29,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 08:03:29,977 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 08:03:29,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 08:03:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:29,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:29,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:29,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183740455] [2022-12-14 08:03:29,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183740455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:29,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:29,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:03:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477029849] [2022-12-14 08:03:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:03:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:03:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:29,999 INFO L87 Difference]: Start difference. First operand 3176 states and 5339 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:33,385 INFO L93 Difference]: Finished difference Result 3343 states and 5514 transitions. [2022-12-14 08:03:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:03:33,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 08:03:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:33,393 INFO L225 Difference]: With dead ends: 3343 [2022-12-14 08:03:33,394 INFO L226 Difference]: Without dead ends: 3343 [2022-12-14 08:03:33,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:33,394 INFO L413 NwaCegarLoop]: 2361 mSDtfsCounter, 2255 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:33,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 2451 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 08:03:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-12-14 08:03:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2043. [2022-12-14 08:03:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1031 states have (on average 2.0300678952473326) internal successors, (2093), 2037 states have internal predecessors, (2093), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 08:03:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3099 transitions. [2022-12-14 08:03:33,594 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3099 transitions. Word has length 7 [2022-12-14 08:03:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:33,594 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3099 transitions. [2022-12-14 08:03:33,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3099 transitions. [2022-12-14 08:03:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:03:33,595 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:33,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:33,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 08:03:33,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:33,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 08:03:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:33,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157636471] [2022-12-14 08:03:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:33,801 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 [2022-12-14 08:03:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:33,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:33,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:33,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:03:33,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:33,937 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 [2022-12-14 08:03:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:33,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:33,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:33,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157636471] [2022-12-14 08:03:33,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157636471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:33,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:33,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:03:33,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864798853] [2022-12-14 08:03:33,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:33,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:03:33,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:03:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:33,949 INFO L87 Difference]: Start difference. First operand 2043 states and 3099 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:36,066 INFO L93 Difference]: Finished difference Result 3209 states and 5286 transitions. [2022-12-14 08:03:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:03:36,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 08:03:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:36,076 INFO L225 Difference]: With dead ends: 3209 [2022-12-14 08:03:36,076 INFO L226 Difference]: Without dead ends: 3209 [2022-12-14 08:03:36,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:36,077 INFO L413 NwaCegarLoop]: 4864 mSDtfsCounter, 1802 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:36,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7121 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 08:03:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-12-14 08:03:36,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 1996. [2022-12-14 08:03:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1031 states have (on average 1.9844810863239573) internal successors, (2046), 1990 states have internal predecessors, (2046), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 08:03:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3052 transitions. [2022-12-14 08:03:36,269 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3052 transitions. Word has length 8 [2022-12-14 08:03:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:36,269 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 3052 transitions. [2022-12-14 08:03:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3052 transitions. [2022-12-14 08:03:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:03:36,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:36,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:36,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-14 08:03:36,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:36,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 08:03:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:36,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856354362] [2022-12-14 08:03:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:36,471 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 [2022-12-14 08:03:36,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:36,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:36,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:36,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:03:36,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:36,558 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 [2022-12-14 08:03:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:36,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:36,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:36,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856354362] [2022-12-14 08:03:36,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856354362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:36,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:36,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:03:36,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506434514] [2022-12-14 08:03:36,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:36,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:03:36,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:03:36,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:36,577 INFO L87 Difference]: Start difference. First operand 1996 states and 3052 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:39,354 INFO L93 Difference]: Finished difference Result 3274 states and 5354 transitions. [2022-12-14 08:03:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:03:39,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 08:03:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:39,362 INFO L225 Difference]: With dead ends: 3274 [2022-12-14 08:03:39,362 INFO L226 Difference]: Without dead ends: 3274 [2022-12-14 08:03:39,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:39,363 INFO L413 NwaCegarLoop]: 5056 mSDtfsCounter, 1489 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:39,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 7477 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 08:03:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-12-14 08:03:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2018. [2022-12-14 08:03:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1063 states have (on average 1.9774223894637817) internal successors, (2102), 2012 states have internal predecessors, (2102), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 08:03:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3108 transitions. [2022-12-14 08:03:39,544 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3108 transitions. Word has length 8 [2022-12-14 08:03:39,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:39,545 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3108 transitions. [2022-12-14 08:03:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:39,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3108 transitions. [2022-12-14 08:03:39,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:03:39,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:39,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:39,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:39,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:39,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr430REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:39,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:39,747 INFO L85 PathProgramCache]: Analyzing trace with hash 696609462, now seen corresponding path program 1 times [2022-12-14 08:03:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823446624] [2022-12-14 08:03:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:39,748 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 [2022-12-14 08:03:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:39,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:39,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:39,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:03:39,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:39,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:39,876 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:39,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823446624] [2022-12-14 08:03:39,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823446624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:39,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:39,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:03:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063728471] [2022-12-14 08:03:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:39,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:03:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:03:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:39,877 INFO L87 Difference]: Start difference. First operand 2018 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:40,121 INFO L93 Difference]: Finished difference Result 3485 states and 5610 transitions. [2022-12-14 08:03:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:03:40,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 08:03:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:40,130 INFO L225 Difference]: With dead ends: 3485 [2022-12-14 08:03:40,130 INFO L226 Difference]: Without dead ends: 3485 [2022-12-14 08:03:40,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:40,131 INFO L413 NwaCegarLoop]: 3604 mSDtfsCounter, 1560 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6489 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:40,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 6489 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:03:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2022-12-14 08:03:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3192. [2022-12-14 08:03:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 1737 states have (on average 1.9568221070811744) internal successors, (3399), 3186 states have internal predecessors, (3399), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 5405 transitions. [2022-12-14 08:03:40,362 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 5405 transitions. Word has length 11 [2022-12-14 08:03:40,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:40,363 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 5405 transitions. [2022-12-14 08:03:40,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 5405 transitions. [2022-12-14 08:03:40,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:03:40,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:40,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:40,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:40,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:40,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-12-14 08:03:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:40,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141701080] [2022-12-14 08:03:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:40,566 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 [2022-12-14 08:03:40,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:40,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:40,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:40,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:03:40,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:40,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:40,655 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:40,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141701080] [2022-12-14 08:03:40,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141701080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:40,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:40,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:03:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253744528] [2022-12-14 08:03:40,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:03:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:03:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:40,656 INFO L87 Difference]: Start difference. First operand 3192 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:40,690 INFO L93 Difference]: Finished difference Result 3346 states and 5545 transitions. [2022-12-14 08:03:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:03:40,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 08:03:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:40,702 INFO L225 Difference]: With dead ends: 3346 [2022-12-14 08:03:40,702 INFO L226 Difference]: Without dead ends: 3346 [2022-12-14 08:03:40,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:40,703 INFO L413 NwaCegarLoop]: 3200 mSDtfsCounter, 1394 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4515 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:40,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4515 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:03:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2022-12-14 08:03:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 3132. [2022-12-14 08:03:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 1701 states have (on average 1.9476778365667256) internal successors, (3313), 3126 states have internal predecessors, (3313), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5319 transitions. [2022-12-14 08:03:40,897 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5319 transitions. Word has length 13 [2022-12-14 08:03:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:40,897 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 5319 transitions. [2022-12-14 08:03:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5319 transitions. [2022-12-14 08:03:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 08:03:40,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:40,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:40,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:41,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:41,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:41,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -579444504, now seen corresponding path program 1 times [2022-12-14 08:03:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:41,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756095881] [2022-12-14 08:03:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:41,100 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 [2022-12-14 08:03:41,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:41,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:41,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:41,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:03:41,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:41,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:03:41,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:03:41,248 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 29 treesize of output 38 [2022-12-14 08:03:41,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:03:41,288 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 62 treesize of output 22 [2022-12-14 08:03:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:41,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:41,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:41,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756095881] [2022-12-14 08:03:41,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756095881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:41,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:41,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:03:41,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778832166] [2022-12-14 08:03:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:41,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:03:41,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:03:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:41,309 INFO L87 Difference]: Start difference. First operand 3132 states and 5319 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:44,342 INFO L93 Difference]: Finished difference Result 5449 states and 9667 transitions. [2022-12-14 08:03:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:03:44,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 08:03:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:44,353 INFO L225 Difference]: With dead ends: 5449 [2022-12-14 08:03:44,353 INFO L226 Difference]: Without dead ends: 5449 [2022-12-14 08:03:44,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:03:44,354 INFO L413 NwaCegarLoop]: 3457 mSDtfsCounter, 1333 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 9264 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:44,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 9264 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 08:03:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-12-14 08:03:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 3131. [2022-12-14 08:03:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 1700 states have (on average 1.9476470588235295) internal successors, (3311), 3125 states have internal predecessors, (3311), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5317 transitions. [2022-12-14 08:03:44,693 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5317 transitions. Word has length 14 [2022-12-14 08:03:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:44,694 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5317 transitions. [2022-12-14 08:03:44,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5317 transitions. [2022-12-14 08:03:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 08:03:44,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:44,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:44,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:44,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:44,896 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:44,897 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 08:03:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:44,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411304460] [2022-12-14 08:03:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:44,899 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 [2022-12-14 08:03:44,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:44,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:44,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:45,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:03:45,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:45,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:45,031 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411304460] [2022-12-14 08:03:45,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411304460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:45,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:45,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:03:45,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528739458] [2022-12-14 08:03:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:45,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:03:45,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:03:45,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:45,032 INFO L87 Difference]: Start difference. First operand 3131 states and 5317 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:45,064 INFO L93 Difference]: Finished difference Result 3071 states and 5231 transitions. [2022-12-14 08:03:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:03:45,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 08:03:45,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:45,071 INFO L225 Difference]: With dead ends: 3071 [2022-12-14 08:03:45,071 INFO L226 Difference]: Without dead ends: 3071 [2022-12-14 08:03:45,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:03:45,071 INFO L413 NwaCegarLoop]: 2952 mSDtfsCounter, 1931 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:45,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 3479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:03:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2022-12-14 08:03:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3071. [2022-12-14 08:03:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1664 states have (on average 1.9381009615384615) internal successors, (3225), 3065 states have internal predecessors, (3225), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5231 transitions. [2022-12-14 08:03:45,253 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5231 transitions. Word has length 18 [2022-12-14 08:03:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:45,253 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 5231 transitions. [2022-12-14 08:03:45,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5231 transitions. [2022-12-14 08:03:45,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 08:03:45,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:45,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:45,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:45,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:45,455 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:45,456 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 08:03:45,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:45,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859982947] [2022-12-14 08:03:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:45,457 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 [2022-12-14 08:03:45,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:45,458 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:45,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:45,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:03:45,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:45,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:45,759 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859982947] [2022-12-14 08:03:45,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859982947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:45,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:03:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741738732] [2022-12-14 08:03:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:03:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:03:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:45,760 INFO L87 Difference]: Start difference. First operand 3071 states and 5231 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:45,819 INFO L93 Difference]: Finished difference Result 3043 states and 5175 transitions. [2022-12-14 08:03:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:03:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 08:03:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:45,824 INFO L225 Difference]: With dead ends: 3043 [2022-12-14 08:03:45,824 INFO L226 Difference]: Without dead ends: 3043 [2022-12-14 08:03:45,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:03:45,825 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1912 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:45,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 6334 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:03:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-12-14 08:03:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3041. [2022-12-14 08:03:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 1648 states have (on average 1.9217233009708738) internal successors, (3167), 3035 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 5173 transitions. [2022-12-14 08:03:46,026 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 5173 transitions. Word has length 20 [2022-12-14 08:03:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:46,026 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 5173 transitions. [2022-12-14 08:03:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 5173 transitions. [2022-12-14 08:03:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 08:03:46,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:46,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:46,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-14 08:03:46,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:46,228 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:46,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 08:03:46,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:46,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676589200] [2022-12-14 08:03:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:46,229 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 [2022-12-14 08:03:46,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:46,230 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:46,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 08:03:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:46,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:03:46,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:46,362 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 [2022-12-14 08:03:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:46,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:46,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:46,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676589200] [2022-12-14 08:03:46,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676589200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:46,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:46,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:03:46,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851304820] [2022-12-14 08:03:46,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:46,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:03:46,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:46,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:03:46,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:46,424 INFO L87 Difference]: Start difference. First operand 3041 states and 5173 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:49,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:49,500 INFO L93 Difference]: Finished difference Result 5472 states and 9669 transitions. [2022-12-14 08:03:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:03:49,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 08:03:49,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:49,510 INFO L225 Difference]: With dead ends: 5472 [2022-12-14 08:03:49,510 INFO L226 Difference]: Without dead ends: 5472 [2022-12-14 08:03:49,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:03:49,511 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 3438 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:49,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 6500 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 08:03:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-12-14 08:03:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 3037. [2022-12-14 08:03:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 1648 states have (on average 1.916868932038835) internal successors, (3159), 3031 states have internal predecessors, (3159), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 5165 transitions. [2022-12-14 08:03:49,870 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 5165 transitions. Word has length 34 [2022-12-14 08:03:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:49,870 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 5165 transitions. [2022-12-14 08:03:49,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 5165 transitions. [2022-12-14 08:03:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 08:03:49,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:49,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:49,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-14 08:03:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:50,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 08:03:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:50,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267367866] [2022-12-14 08:03:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:50,072 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 [2022-12-14 08:03:50,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:50,073 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:50,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:50,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:03:50,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:50,205 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 [2022-12-14 08:03:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:50,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:50,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267367866] [2022-12-14 08:03:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267367866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:50,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:50,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:03:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614480764] [2022-12-14 08:03:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:50,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:03:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:50,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:03:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:50,365 INFO L87 Difference]: Start difference. First operand 3037 states and 5165 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:55,559 INFO L93 Difference]: Finished difference Result 5529 states and 9691 transitions. [2022-12-14 08:03:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:03:55,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 08:03:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:55,567 INFO L225 Difference]: With dead ends: 5529 [2022-12-14 08:03:55,568 INFO L226 Difference]: Without dead ends: 5529 [2022-12-14 08:03:55,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:03:55,568 INFO L413 NwaCegarLoop]: 5150 mSDtfsCounter, 2908 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 10076 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:55,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 10076 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 08:03:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-12-14 08:03:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 3033. [2022-12-14 08:03:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 1648 states have (on average 1.9120145631067962) internal successors, (3151), 3027 states have internal predecessors, (3151), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5157 transitions. [2022-12-14 08:03:55,947 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5157 transitions. Word has length 34 [2022-12-14 08:03:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:55,948 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 5157 transitions. [2022-12-14 08:03:55,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5157 transitions. [2022-12-14 08:03:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:03:55,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:55,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:55,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 08:03:56,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:56,149 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 08:03:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:56,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388798451] [2022-12-14 08:03:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:56,150 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 [2022-12-14 08:03:56,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:56,151 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:56,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:56,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:03:56,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:56,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:56,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:56,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388798451] [2022-12-14 08:03:56,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388798451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:56,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:56,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:03:56,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529378457] [2022-12-14 08:03:56,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:56,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:03:56,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:03:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:56,363 INFO L87 Difference]: Start difference. First operand 3033 states and 5157 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:03:56,419 INFO L93 Difference]: Finished difference Result 3021 states and 5137 transitions. [2022-12-14 08:03:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:03:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 08:03:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:03:56,425 INFO L225 Difference]: With dead ends: 3021 [2022-12-14 08:03:56,425 INFO L226 Difference]: Without dead ends: 3021 [2022-12-14 08:03:56,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:03:56,426 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1881 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6312 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:03:56,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 6312 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:03:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-12-14 08:03:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3021. [2022-12-14 08:03:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 1636 states have (on average 1.9138141809290954) internal successors, (3131), 3015 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:03:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 5137 transitions. [2022-12-14 08:03:56,644 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 5137 transitions. Word has length 52 [2022-12-14 08:03:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:03:56,644 INFO L495 AbstractCegarLoop]: Abstraction has 3021 states and 5137 transitions. [2022-12-14 08:03:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:03:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 5137 transitions. [2022-12-14 08:03:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 08:03:56,645 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:03:56,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:03:56,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:56,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:56,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:03:56,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:03:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 08:03:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:03:56,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568175581] [2022-12-14 08:03:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:03:56,846 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 [2022-12-14 08:03:56,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:03:56,847 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:03:56,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:03:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:03:57,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:03:57,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:03:57,123 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 [2022-12-14 08:03:57,128 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 [2022-12-14 08:03:57,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:03:57,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 08:03:57,506 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 08:03:57,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 08:03:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:03:57,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:03:57,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:03:57,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568175581] [2022-12-14 08:03:57,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568175581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:03:57,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:03:57,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:03:57,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251387354] [2022-12-14 08:03:57,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:03:57,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:03:57,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:03:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:03:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:03:57,524 INFO L87 Difference]: Start difference. First operand 3021 states and 5137 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:04:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:04:01,679 INFO L93 Difference]: Finished difference Result 5223 states and 9398 transitions. [2022-12-14 08:04:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:04:01,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 08:04:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:04:01,686 INFO L225 Difference]: With dead ends: 5223 [2022-12-14 08:04:01,686 INFO L226 Difference]: Without dead ends: 5223 [2022-12-14 08:04:01,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:04:01,687 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2770 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3773 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:04:01,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3773 Valid, 4221 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 08:04:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2022-12-14 08:04:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 2951. [2022-12-14 08:04:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1604 states have (on average 1.8871571072319202) internal successors, (3027), 2945 states have internal predecessors, (3027), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:04:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 5033 transitions. [2022-12-14 08:04:02,008 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 5033 transitions. Word has length 60 [2022-12-14 08:04:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:04:02,009 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 5033 transitions. [2022-12-14 08:04:02,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:04:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 5033 transitions. [2022-12-14 08:04:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:04:02,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:04:02,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:04:02,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 08:04:02,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:02,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:04:02,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:04:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 08:04:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:04:02,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522255936] [2022-12-14 08:04:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:04:02,211 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 [2022-12-14 08:04:02,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:04:02,212 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:04:02,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:04:02,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:04:02,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:02,431 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 [2022-12-14 08:04:02,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:04:02,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 08:04:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:02,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:04:02,465 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:04:02,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522255936] [2022-12-14 08:04:02,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522255936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:04:02,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:04:02,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:04:02,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237031811] [2022-12-14 08:04:02,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:04:02,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:04:02,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:04:02,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:04:02,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:04:02,466 INFO L87 Difference]: Start difference. First operand 2951 states and 5033 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:04:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:04:04,396 INFO L93 Difference]: Finished difference Result 2950 states and 5032 transitions. [2022-12-14 08:04:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:04:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 08:04:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:04:04,403 INFO L225 Difference]: With dead ends: 2950 [2022-12-14 08:04:04,403 INFO L226 Difference]: Without dead ends: 2950 [2022-12-14 08:04:04,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:04:04,403 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 4 mSDsluCounter, 7345 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10206 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:04:04,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10206 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 08:04:04,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-12-14 08:04:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2022-12-14 08:04:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1604 states have (on average 1.8865336658354115) internal successors, (3026), 2944 states have internal predecessors, (3026), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:04:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5032 transitions. [2022-12-14 08:04:04,572 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5032 transitions. Word has length 65 [2022-12-14 08:04:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:04:04,572 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 5032 transitions. [2022-12-14 08:04:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:04:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5032 transitions. [2022-12-14 08:04:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:04:04,573 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:04:04,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:04:04,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:04,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:04,774 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:04:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:04:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 08:04:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:04:04,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867923544] [2022-12-14 08:04:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:04:04,775 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 [2022-12-14 08:04:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:04:04,775 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:04:04,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 08:04:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:04:05,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:04:05,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:05,010 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 [2022-12-14 08:04:05,024 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 [2022-12-14 08:04:05,031 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 [2022-12-14 08:04:05,073 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 21 treesize of output 9 [2022-12-14 08:04:05,078 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 7 [2022-12-14 08:04:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:05,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:04:05,093 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:04:05,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867923544] [2022-12-14 08:04:05,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867923544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:04:05,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:04:05,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:04:05,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987454988] [2022-12-14 08:04:05,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:04:05,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:04:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:04:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:04:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:04:05,095 INFO L87 Difference]: Start difference. First operand 2950 states and 5032 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:04:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:04:07,814 INFO L93 Difference]: Finished difference Result 2949 states and 5031 transitions. [2022-12-14 08:04:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:04:07,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 08:04:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:04:07,820 INFO L225 Difference]: With dead ends: 2949 [2022-12-14 08:04:07,820 INFO L226 Difference]: Without dead ends: 2949 [2022-12-14 08:04:07,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:04:07,821 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:04:07,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10242 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 08:04:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-12-14 08:04:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-12-14 08:04:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 1603 states have (on average 1.8870867124142234) internal successors, (3025), 2943 states have internal predecessors, (3025), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 08:04:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 5031 transitions. [2022-12-14 08:04:07,993 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 5031 transitions. Word has length 65 [2022-12-14 08:04:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:04:07,993 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 5031 transitions. [2022-12-14 08:04:07,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:04:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 5031 transitions. [2022-12-14 08:04:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 08:04:07,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:04:07,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:04:08,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 08:04:08,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:08,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:04:08,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:04:08,197 INFO L85 PathProgramCache]: Analyzing trace with hash -517931281, now seen corresponding path program 1 times [2022-12-14 08:04:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:04:08,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068673011] [2022-12-14 08:04:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:04:08,200 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 [2022-12-14 08:04:08,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:04:08,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:04:08,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:04:08,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:04:08,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:08,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:04:08,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:04:08,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068673011] [2022-12-14 08:04:08,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068673011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:04:08,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:04:08,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:04:08,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088798814] [2022-12-14 08:04:08,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:04:08,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:04:08,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:04:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:04:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:04:08,461 INFO L87 Difference]: Start difference. First operand 2949 states and 5031 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:04:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:04:08,512 INFO L93 Difference]: Finished difference Result 2952 states and 5035 transitions. [2022-12-14 08:04:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:04:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-12-14 08:04:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:04:08,520 INFO L225 Difference]: With dead ends: 2952 [2022-12-14 08:04:08,520 INFO L226 Difference]: Without dead ends: 2952 [2022-12-14 08:04:08,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:04:08,520 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8578 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:04:08,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8578 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:04:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-12-14 08:04:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2022-12-14 08:04:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 1605 states have (on average 1.8866043613707164) internal successors, (3028), 2946 states have internal predecessors, (3028), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 08:04:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5035 transitions. [2022-12-14 08:04:08,699 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5035 transitions. Word has length 73 [2022-12-14 08:04:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:04:08,700 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 5035 transitions. [2022-12-14 08:04:08,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:04:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5035 transitions. [2022-12-14 08:04:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 08:04:08,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:04:08,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:04:08,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:08,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:08,901 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:04:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:04:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash -563037036, now seen corresponding path program 1 times [2022-12-14 08:04:08,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:04:08,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372630391] [2022-12-14 08:04:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:04:08,902 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 [2022-12-14 08:04:08,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:04:08,903 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:04:08,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 08:04:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:04:09,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:04:09,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:09,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:04:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:09,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:04:09,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372630391] [2022-12-14 08:04:09,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372630391] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:04:09,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1251935626] [2022-12-14 08:04:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:04:09,210 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:04:09,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:04:09,211 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:04:09,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 08:04:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:04:09,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:04:09,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:09,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:04:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:09,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1251935626] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:04:09,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125335772] [2022-12-14 08:04:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:04:09,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:04:09,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:04:09,586 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:04:09,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 08:04:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:04:09,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:04:09,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:09,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:04:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:09,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125335772] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:04:09,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:04:09,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 08:04:09,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106907069] [2022-12-14 08:04:09,844 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:04:09,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:04:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:04:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:04:09,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:04:09,846 INFO L87 Difference]: Start difference. First operand 2952 states and 5035 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:04:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:04:10,037 INFO L93 Difference]: Finished difference Result 2964 states and 5052 transitions. [2022-12-14 08:04:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:04:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-12-14 08:04:10,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:04:10,046 INFO L225 Difference]: With dead ends: 2964 [2022-12-14 08:04:10,046 INFO L226 Difference]: Without dead ends: 2964 [2022-12-14 08:04:10,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:04:10,046 INFO L413 NwaCegarLoop]: 2862 mSDtfsCounter, 9 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:04:10,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11436 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:04:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-12-14 08:04:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2962. [2022-12-14 08:04:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 1614 states have (on average 1.885377942998761) internal successors, (3043), 2955 states have internal predecessors, (3043), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 08:04:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 5050 transitions. [2022-12-14 08:04:10,227 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 5050 transitions. Word has length 74 [2022-12-14 08:04:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:04:10,227 INFO L495 AbstractCegarLoop]: Abstraction has 2962 states and 5050 transitions. [2022-12-14 08:04:10,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:04:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 5050 transitions. [2022-12-14 08:04:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 08:04:10,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:04:10,228 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:04:10,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 08:04:10,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 08:04:10,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 08:04:10,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:04:10,830 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:04:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:04:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1779056593, now seen corresponding path program 2 times [2022-12-14 08:04:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:04:10,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397938314] [2022-12-14 08:04:10,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:04:10,834 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 [2022-12-14 08:04:10,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:04:10,837 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:04:10,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:04:11,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:04:11,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:04:11,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:04:11,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:11,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:04:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:11,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:04:11,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397938314] [2022-12-14 08:04:11,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397938314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:04:11,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [863518897] [2022-12-14 08:04:11,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:04:11,426 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:04:11,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:04:11,427 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:04:11,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-14 08:04:12,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:04:12,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:04:12,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:04:12,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:12,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:04:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:04:12,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [863518897] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:04:12,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921621306] [2022-12-14 08:04:12,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:04:12,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:04:12,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:04:12,833 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:04:12,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 08:04:41,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:04:41,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:04:41,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 08:04:41,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:04:41,367 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 [2022-12-14 08:04:41,374 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 08:04:41,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 08:04:41,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:04:41,415 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 [2022-12-14 08:04:41,529 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 22 treesize of output 10 [2022-12-14 08:04:41,533 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 9 treesize of output 3 [2022-12-14 08:04:41,597 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1619 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1619))) (exists ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1618))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 08:04:41,608 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1621))) (exists ((v_ArrVal_1620 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1620))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 08:04:41,620 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1623))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 08:04:41,632 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1625 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1625) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1624) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 08:04:41,677 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 08:04:41,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-14 08:04:41,685 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 22 treesize of output 24 [2022-12-14 08:04:41,752 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 31 treesize of output 13 [2022-12-14 08:04:41,756 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 19 treesize of output 7 [2022-12-14 08:04:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-12-14 08:04:41,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:04:42,059 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2022-12-14 08:04:42,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921621306] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:04:42,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 08:04:42,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 08:04:42,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339588812] [2022-12-14 08:04:42,065 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 08:04:42,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 08:04:42,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:04:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 08:04:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-12-14 08:04:42,066 INFO L87 Difference]: Start difference. First operand 2962 states and 5050 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 08:05:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:05:00,013 INFO L93 Difference]: Finished difference Result 5225 states and 9378 transitions. [2022-12-14 08:05:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 08:05:00,014 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-12-14 08:05:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:05:00,024 INFO L225 Difference]: With dead ends: 5225 [2022-12-14 08:05:00,024 INFO L226 Difference]: Without dead ends: 5219 [2022-12-14 08:05:00,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=421, Invalid=1941, Unknown=10, NotChecked=490, Total=2862 [2022-12-14 08:05:00,025 INFO L413 NwaCegarLoop]: 3063 mSDtfsCounter, 4429 mSDsluCounter, 27949 mSDsCounter, 0 mSdLazyCounter, 9541 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 31012 SdHoareTripleChecker+Invalid, 30976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 9541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20388 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:05:00,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4929 Valid, 31012 Invalid, 30976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1047 Valid, 9541 Invalid, 0 Unknown, 20388 Unchecked, 16.6s Time] [2022-12-14 08:05:00,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2022-12-14 08:05:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 2971. [2022-12-14 08:05:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 1623 states have (on average 1.8817005545286507) internal successors, (3054), 2964 states have internal predecessors, (3054), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 08:05:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 5061 transitions. [2022-12-14 08:05:00,407 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 5061 transitions. Word has length 77 [2022-12-14 08:05:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:05:00,407 INFO L495 AbstractCegarLoop]: Abstraction has 2971 states and 5061 transitions. [2022-12-14 08:05:00,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 08:05:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 5061 transitions. [2022-12-14 08:05:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 08:05:00,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:05:00,408 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:05:00,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 08:05:00,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 08:05:00,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-12-14 08:05:01,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:05:01,010 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 08:05:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:05:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash -271518193, now seen corresponding path program 3 times [2022-12-14 08:05:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:05:01,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384584381] [2022-12-14 08:05:01,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:05:01,015 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 [2022-12-14 08:05:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:05:01,016 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:05:01,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-14 08:05:01,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 08:05:01,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:05:01,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 08:05:01,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:05:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:05:01,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:05:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:05:02,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:05:02,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384584381] [2022-12-14 08:05:02,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384584381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:05:02,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1105483593] [2022-12-14 08:05:02,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:05:02,512 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:05:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:05:02,513 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:05:02,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-12-14 08:05:06,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 08:05:06,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:05:06,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 08:05:06,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:05:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:05:06,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:05:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:05:07,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1105483593] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:05:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070943466] [2022-12-14 08:05:07,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:05:07,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:05:07,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:05:07,134 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:05:07,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6fe4f5-0a5e-4386-8340-fe4c29e30b36/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process