./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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_760bef22-a83c-4855-8800-bc3940530c25/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 c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- 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 03:08:59,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:08:59,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:08:59,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:08:59,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:08:59,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:08:59,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:08:59,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:08:59,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:08:59,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:08:59,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:08:59,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:08:59,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:08:59,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:08:59,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:08:59,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:08:59,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:08:59,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:08:59,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:08:59,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:08:59,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:08:59,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:08:59,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:08:59,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:08:59,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:08:59,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:08:59,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:08:59,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:08:59,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:08:59,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:08:59,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:08:59,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:08:59,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:08:59,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:08:59,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:08:59,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:08:59,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:08:59,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:08:59,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:08:59,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:08:59,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:08:59,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 03:08:59,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:08:59,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:08:59,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:08:59,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:08:59,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:08:59,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:08:59,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:08:59,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:08:59,857 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:08:59,857 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:08:59,857 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:08:59,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:08:59,857 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:08:59,858 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:08:59,858 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:08:59,858 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:08:59,858 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:08:59,858 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:08:59,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 03:08:59,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 03:08:59,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:08:59,860 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:08:59,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 03:08:59,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:08:59,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:08:59,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:08:59,861 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 03:08:59,861 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 03:08:59,861 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 03:08:59,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:08:59,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 03:08:59,862 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:08:59,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:08:59,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:08:59,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:08:59,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:08:59,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:08:59,863 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:08:59,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:08:59,863 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:08:59,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:08:59,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:08:59,864 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_760bef22-a83c-4855-8800-bc3940530c25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2022-12-14 03:09:00,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:09:00,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:09:00,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:09:00,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:09:00,059 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:09:00,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-12-14 03:09:02,637 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:09:02,850 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:09:02,850 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-12-14 03:09:02,860 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data/22d1ba496/dfeab5b8cc354ed7b5b1eee91e938855/FLAGf92332a9a [2022-12-14 03:09:03,218 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data/22d1ba496/dfeab5b8cc354ed7b5b1eee91e938855 [2022-12-14 03:09:03,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:09:03,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:09:03,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:09:03,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:09:03,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:09:03,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:09:03" (1/1) ... [2022-12-14 03:09:03,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404c8cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:03, skipping insertion in model container [2022-12-14 03:09:03,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:09:03" (1/1) ... [2022-12-14 03:09:03,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:09:03,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:09:03,567 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-12-14 03:09:03,646 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 03:09:03,656 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-12-14 03:09:03,657 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-12-14 03:09:03,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:09:03,673 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 03:09:03,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61e37a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:03, skipping insertion in model container [2022-12-14 03:09:03,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:09:03,674 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 03:09:03,675 INFO L158 Benchmark]: Toolchain (without parser) took 453.35ms. Allocated memory is still 136.3MB. Free memory was 101.0MB in the beginning and 82.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 03:09:03,675 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:09:03,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.84ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 82.1MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 03:09:03,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.84ms. Allocated memory is still 136.3MB. Free memory was 100.7MB in the beginning and 82.1MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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_760bef22-a83c-4855-8800-bc3940530c25/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 c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- 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 03:09:04,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:09:04,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:09:04,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:09:04,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:09:04,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:09:04,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:09:04,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:09:04,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:09:04,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:09:04,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:09:04,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:09:04,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:09:04,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:09:04,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:09:04,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:09:04,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:09:04,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:09:04,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:09:04,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:09:04,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:09:04,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:09:04,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:09:04,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:09:04,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:09:04,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:09:04,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:09:04,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:09:04,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:09:04,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:09:04,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:09:04,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:09:04,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:09:04,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:09:04,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:09:04,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:09:04,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:09:04,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:09:04,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:09:04,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:09:04,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:09:04,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 03:09:04,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:09:04,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:09:04,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:09:04,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:09:04,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:09:04,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:09:05,000 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:09:05,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:09:05,000 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:09:05,000 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:09:05,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:09:05,001 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:09:05,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 03:09:05,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 03:09:05,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:09:05,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:09:05,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 03:09:05,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:09:05,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:09:05,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:09:05,003 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 03:09:05,003 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 03:09:05,003 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 03:09:05,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:09:05,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 03:09:05,004 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 03:09:05,004 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 03:09:05,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:09:05,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:09:05,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:09:05,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 03:09:05,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:09:05,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:09:05,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:09:05,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:09:05,006 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 03:09:05,006 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 03:09:05,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:09:05,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 03:09:05,006 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_760bef22-a83c-4855-8800-bc3940530c25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2022-12-14 03:09:05,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:09:05,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:09:05,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:09:05,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:09:05,240 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:09:05,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-12-14 03:09:07,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:09:07,989 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:09:07,989 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-12-14 03:09:08,000 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data/29cfe0220/53aecd114f164656858e686289ef9ed3/FLAGf8f22179a [2022-12-14 03:09:08,011 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/data/29cfe0220/53aecd114f164656858e686289ef9ed3 [2022-12-14 03:09:08,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:09:08,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:09:08,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:09:08,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:09:08,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:09:08,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365b220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08, skipping insertion in model container [2022-12-14 03:09:08,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:09:08,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:09:08,292 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-12-14 03:09:08,348 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 03:09:08,355 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-12-14 03:09:08,356 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-12-14 03:09:08,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:09:08,369 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 03:09:08,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:09:08,388 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-12-14 03:09:08,429 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 03:09:08,435 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-12-14 03:09:08,436 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-12-14 03:09:08,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:09:08,442 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:09:08,461 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-12-14 03:09:08,495 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 03:09:08,504 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-12-14 03:09:08,505 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_760bef22-a83c-4855-8800-bc3940530c25/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-12-14 03:09:08,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:09:08,539 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:09:08,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08 WrapperNode [2022-12-14 03:09:08,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:09:08,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:09:08,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:09:08,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:09:08,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,612 INFO L138 Inliner]: procedures = 179, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1007 [2022-12-14 03:09:08,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:09:08,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:09:08,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:09:08,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:09:08,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,685 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:09:08,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:09:08,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:09:08,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:09:08,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (1/1) ... [2022-12-14 03:09:08,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:09:08,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:08,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:09:08,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:09:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 03:09:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 03:09:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 03:09:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 03:09:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 03:09:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:09:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 03:09:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 03:09:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 03:09:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 03:09:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 03:09:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 03:09:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 03:09:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:09:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:09:08,933 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:09:08,935 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:09:08,939 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 03:09:12,263 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:09:12,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:09:12,271 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-12-14 03:09:12,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:09:12 BoogieIcfgContainer [2022-12-14 03:09:12,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:09:12,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:09:12,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:09:12,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:09:12,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:09:08" (1/3) ... [2022-12-14 03:09:12,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7048a1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:09:12, skipping insertion in model container [2022-12-14 03:09:12,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:09:08" (2/3) ... [2022-12-14 03:09:12,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7048a1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:09:12, skipping insertion in model container [2022-12-14 03:09:12,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:09:12" (3/3) ... [2022-12-14 03:09:12,279 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-1.i [2022-12-14 03:09:12,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:09:12,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 530 error locations. [2022-12-14 03:09:12,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:09:12,338 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;@6eac995e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:09:12,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2022-12-14 03:09:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 1049 states, 517 states have (on average 2.25531914893617) internal successors, (1166), 1044 states have internal predecessors, (1166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 03:09:12,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:12,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 03:09:12,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 03:09:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:12,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656386937] [2022-12-14 03:09:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:12,361 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 03:09:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:12,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:12,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:12,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:09:12,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:12,501 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 03:09:12,513 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 03:09:12,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:12,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:12,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656386937] [2022-12-14 03:09:12,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656386937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:12,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:12,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:09:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286458846] [2022-12-14 03:09:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:12,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:09:12,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:09:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:12,550 INFO L87 Difference]: Start difference. First operand has 1049 states, 517 states have (on average 2.25531914893617) internal successors, (1166), 1044 states have internal predecessors, (1166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 03:09:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:13,873 INFO L93 Difference]: Finished difference Result 1040 states and 1094 transitions. [2022-12-14 03:09:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:09:13,876 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 03:09:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:13,886 INFO L225 Difference]: With dead ends: 1040 [2022-12-14 03:09:13,886 INFO L226 Difference]: Without dead ends: 1038 [2022-12-14 03:09:13,887 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 03:09:13,890 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 967 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:13,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 668 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 03:09:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-12-14 03:09:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1030. [2022-12-14 03:09:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 515 states have (on average 2.095145631067961) internal successors, (1079), 1025 states have internal predecessors, (1079), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1085 transitions. [2022-12-14 03:09:13,942 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1085 transitions. Word has length 3 [2022-12-14 03:09:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:13,942 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1085 transitions. [2022-12-14 03:09:13,942 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 03:09:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1085 transitions. [2022-12-14 03:09:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 03:09:13,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:13,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 03:09:13,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:14,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:14,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:14,147 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 03:09:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:14,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714726353] [2022-12-14 03:09:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:14,149 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 03:09:14,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:14,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:14,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:14,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:09:14,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:14,267 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 03:09:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:09:14,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:14,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714726353] [2022-12-14 03:09:14,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714726353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:14,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:14,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:09:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636732432] [2022-12-14 03:09:14,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:14,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:09:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:09:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:14,279 INFO L87 Difference]: Start difference. First operand 1030 states and 1085 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 03:09:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:16,729 INFO L93 Difference]: Finished difference Result 1420 states and 1504 transitions. [2022-12-14 03:09:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:09:16,729 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 03:09:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:16,732 INFO L225 Difference]: With dead ends: 1420 [2022-12-14 03:09:16,732 INFO L226 Difference]: Without dead ends: 1420 [2022-12-14 03:09:16,732 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 03:09:16,733 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 419 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:16,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1458 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 03:09:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-12-14 03:09:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1231. [2022-12-14 03:09:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 717 states have (on average 2.0808926080892607) internal successors, (1492), 1226 states have internal predecessors, (1492), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1498 transitions. [2022-12-14 03:09:16,749 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1498 transitions. Word has length 3 [2022-12-14 03:09:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:16,749 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1498 transitions. [2022-12-14 03:09:16,750 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 03:09:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1498 transitions. [2022-12-14 03:09:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 03:09:16,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:16,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:16,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:16,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:16,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:16,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 03:09:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:16,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921438714] [2022-12-14 03:09:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:16,957 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 03:09:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:16,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:16,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:17,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 03:09:17,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:17,109 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 03:09:17,114 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 03:09:17,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 03:09:17,163 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 03:09:17,174 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 03:09:17,175 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 03:09:17,195 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 03:09:17,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:17,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921438714] [2022-12-14 03:09:17,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921438714] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:17,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:17,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116159906] [2022-12-14 03:09:17,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:17,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:17,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:17,198 INFO L87 Difference]: Start difference. First operand 1231 states and 1498 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 03:09:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:19,329 INFO L93 Difference]: Finished difference Result 1232 states and 1501 transitions. [2022-12-14 03:09:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:19,330 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 03:09:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:19,332 INFO L225 Difference]: With dead ends: 1232 [2022-12-14 03:09:19,332 INFO L226 Difference]: Without dead ends: 1232 [2022-12-14 03:09:19,333 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 03:09:19,333 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1055 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:19,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 379 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 03:09:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-12-14 03:09:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1019. [2022-12-14 03:09:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 515 states have (on average 2.071844660194175) internal successors, (1067), 1014 states have internal predecessors, (1067), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1073 transitions. [2022-12-14 03:09:19,345 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1073 transitions. Word has length 7 [2022-12-14 03:09:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:19,346 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1073 transitions. [2022-12-14 03:09:19,346 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 03:09:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1073 transitions. [2022-12-14 03:09:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 03:09:19,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:19,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:19,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Forceful destruction successful, exit code 0 [2022-12-14 03:09:19,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:19,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 03:09:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:19,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526667657] [2022-12-14 03:09:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:19,549 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 03:09:19,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:19,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:19,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:19,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:09:19,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:19,735 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 03:09:19,742 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 03:09:19,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:19,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:19,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526667657] [2022-12-14 03:09:19,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526667657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:19,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:19,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:09:19,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869939342] [2022-12-14 03:09:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:19,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:09:19,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:09:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:19,744 INFO L87 Difference]: Start difference. First operand 1019 states and 1073 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 03:09:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:21,238 INFO L93 Difference]: Finished difference Result 1348 states and 1431 transitions. [2022-12-14 03:09:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:09:21,240 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 03:09:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:21,244 INFO L225 Difference]: With dead ends: 1348 [2022-12-14 03:09:21,244 INFO L226 Difference]: Without dead ends: 1348 [2022-12-14 03:09:21,244 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 03:09:21,245 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 971 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:21,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1163 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 03:09:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-12-14 03:09:21,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 972. [2022-12-14 03:09:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 515 states have (on average 1.9805825242718447) internal successors, (1020), 967 states have internal predecessors, (1020), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1026 transitions. [2022-12-14 03:09:21,269 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1026 transitions. Word has length 8 [2022-12-14 03:09:21,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:21,270 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1026 transitions. [2022-12-14 03:09:21,270 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 03:09:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1026 transitions. [2022-12-14 03:09:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 03:09:21,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:21,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:21,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Ended with exit code 0 [2022-12-14 03:09:21,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:21,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:21,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:21,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 03:09:21,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:21,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234497590] [2022-12-14 03:09:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:21,472 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 03:09:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:21,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:21,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:21,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:09:21,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:21,549 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 03:09:21,564 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 03:09:21,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:21,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:21,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234497590] [2022-12-14 03:09:21,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234497590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:21,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:21,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:09:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78803523] [2022-12-14 03:09:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:21,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:09:21,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:21,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:09:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:21,566 INFO L87 Difference]: Start difference. First operand 972 states and 1026 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 03:09:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:23,881 INFO L93 Difference]: Finished difference Result 1427 states and 1513 transitions. [2022-12-14 03:09:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:09:23,882 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 03:09:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:23,884 INFO L225 Difference]: With dead ends: 1427 [2022-12-14 03:09:23,884 INFO L226 Difference]: Without dead ends: 1427 [2022-12-14 03:09:23,884 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 03:09:23,885 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 674 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:23,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1538 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 03:09:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2022-12-14 03:09:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 994. [2022-12-14 03:09:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 547 states have (on average 1.9670932358318098) internal successors, (1076), 989 states have internal predecessors, (1076), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1082 transitions. [2022-12-14 03:09:23,904 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1082 transitions. Word has length 8 [2022-12-14 03:09:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:23,904 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1082 transitions. [2022-12-14 03:09:23,904 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 03:09:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1082 transitions. [2022-12-14 03:09:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 03:09:23,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:23,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:23,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:24,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash 693877877, now seen corresponding path program 1 times [2022-12-14 03:09:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:24,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960689496] [2022-12-14 03:09:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:24,110 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 03:09:24,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:24,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:24,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:24,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:09:24,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:24,348 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 03:09:24,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:24,348 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:24,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960689496] [2022-12-14 03:09:24,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960689496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:24,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:24,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:09:24,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959871410] [2022-12-14 03:09:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:24,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:24,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:24,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:24,350 INFO L87 Difference]: Start difference. First operand 994 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 03:09:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:24,906 INFO L93 Difference]: Finished difference Result 1445 states and 1566 transitions. [2022-12-14 03:09:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:09:24,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 03:09:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:24,909 INFO L225 Difference]: With dead ends: 1445 [2022-12-14 03:09:24,909 INFO L226 Difference]: Without dead ends: 1445 [2022-12-14 03:09:24,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 03:09:24,910 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 548 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:24,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2919 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 03:09:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-12-14 03:09:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1235. [2022-12-14 03:09:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 788 states have (on average 1.9441624365482233) internal successors, (1532), 1230 states have internal predecessors, (1532), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1538 transitions. [2022-12-14 03:09:24,923 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1538 transitions. Word has length 11 [2022-12-14 03:09:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:24,923 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1538 transitions. [2022-12-14 03:09:24,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 03:09:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1538 transitions. [2022-12-14 03:09:24,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 03:09:24,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:24,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:24,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:25,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:25,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr529ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:25,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:25,127 INFO L85 PathProgramCache]: Analyzing trace with hash 35377727, now seen corresponding path program 1 times [2022-12-14 03:09:25,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:25,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820096622] [2022-12-14 03:09:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:25,129 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 03:09:25,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:25,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:25,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:25,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 03:09:25,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:25,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 03:09:25,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 03:09:25,327 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 03:09:25,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 03:09:25,364 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 03:09:25,382 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 03:09:25,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:25,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:25,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820096622] [2022-12-14 03:09:25,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820096622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:25,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:25,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:09:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443867345] [2022-12-14 03:09:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:25,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:25,385 INFO L87 Difference]: Start difference. First operand 1235 states and 1538 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 03:09:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:26,718 INFO L93 Difference]: Finished difference Result 1591 states and 1953 transitions. [2022-12-14 03:09:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-12-14 03:09:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:26,722 INFO L225 Difference]: With dead ends: 1591 [2022-12-14 03:09:26,722 INFO L226 Difference]: Without dead ends: 1591 [2022-12-14 03:09:26,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 03:09:26,723 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 355 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:26,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2782 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 03:09:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2022-12-14 03:09:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1234. [2022-12-14 03:09:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 787 states have (on average 1.9440914866581958) internal successors, (1530), 1229 states have internal predecessors, (1530), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1536 transitions. [2022-12-14 03:09:26,744 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1536 transitions. Word has length 12 [2022-12-14 03:09:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:26,744 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1536 transitions. [2022-12-14 03:09:26,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 03:09:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1536 transitions. [2022-12-14 03:09:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 03:09:26,745 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:26,745 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 03:09:26,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:26,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:26,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 03:09:26,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89524603] [2022-12-14 03:09:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:26,950 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 03:09:26,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:26,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:26,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:27,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 03:09:27,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:27,128 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 03:09:27,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:27,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:27,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89524603] [2022-12-14 03:09:27,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89524603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:27,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:27,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691377163] [2022-12-14 03:09:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:09:27,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:27,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:09:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:09:27,129 INFO L87 Difference]: Start difference. First operand 1234 states and 1536 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 03:09:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:27,156 INFO L93 Difference]: Finished difference Result 1174 states and 1450 transitions. [2022-12-14 03:09:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:09:27,156 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 03:09:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:27,159 INFO L225 Difference]: With dead ends: 1174 [2022-12-14 03:09:27,159 INFO L226 Difference]: Without dead ends: 1174 [2022-12-14 03:09:27,160 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 03:09:27,160 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 953 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 991 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 03:09:27,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 991 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:27,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-12-14 03:09:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2022-12-14 03:09:27,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 751 states have (on average 1.9227696404793608) internal successors, (1444), 1169 states have internal predecessors, (1444), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1450 transitions. [2022-12-14 03:09:27,177 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1450 transitions. Word has length 18 [2022-12-14 03:09:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:27,177 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1450 transitions. [2022-12-14 03:09:27,177 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 03:09:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1450 transitions. [2022-12-14 03:09:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 03:09:27,178 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:27,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:09:27,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,378 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 03:09:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:27,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837310723] [2022-12-14 03:09:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:27,379 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 03:09:27,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:27,380 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:27,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:09:27,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:27,510 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 03:09:27,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:27,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:27,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837310723] [2022-12-14 03:09:27,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837310723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:27,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:27,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:09:27,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847337125] [2022-12-14 03:09:27,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:27,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:27,511 INFO L87 Difference]: Start difference. First operand 1174 states and 1450 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 03:09:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:27,551 INFO L93 Difference]: Finished difference Result 1146 states and 1394 transitions. [2022-12-14 03:09:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:27,551 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 03:09:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:27,553 INFO L225 Difference]: With dead ends: 1146 [2022-12-14 03:09:27,553 INFO L226 Difference]: Without dead ends: 1146 [2022-12-14 03:09:27,553 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 03:09:27,554 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 934 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1863 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 03:09:27,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1863 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-12-14 03:09:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1144. [2022-12-14 03:09:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 735 states have (on average 1.8857142857142857) internal successors, (1386), 1139 states have internal predecessors, (1386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1392 transitions. [2022-12-14 03:09:27,570 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1392 transitions. Word has length 20 [2022-12-14 03:09:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:27,570 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1392 transitions. [2022-12-14 03:09:27,570 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 03:09:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1392 transitions. [2022-12-14 03:09:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 03:09:27,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:27,571 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 03:09:27,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 03:09:27,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:27,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642634307] [2022-12-14 03:09:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:27,774 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 03:09:27,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:27,776 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:27,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:09:27,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:27,944 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 03:09:28,002 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 03:09:28,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:28,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:28,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642634307] [2022-12-14 03:09:28,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642634307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:28,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:28,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805525700] [2022-12-14 03:09:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:28,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:28,005 INFO L87 Difference]: Start difference. First operand 1144 states and 1392 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 03:09:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:30,021 INFO L93 Difference]: Finished difference Result 1605 states and 1974 transitions. [2022-12-14 03:09:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:09:30,022 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 03:09:30,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:30,024 INFO L225 Difference]: With dead ends: 1605 [2022-12-14 03:09:30,024 INFO L226 Difference]: Without dead ends: 1605 [2022-12-14 03:09:30,025 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 03:09:30,025 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1675 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:30,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 1002 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 03:09:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2022-12-14 03:09:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1140. [2022-12-14 03:09:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 735 states have (on average 1.874829931972789) internal successors, (1378), 1135 states have internal predecessors, (1378), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1384 transitions. [2022-12-14 03:09:30,038 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1384 transitions. Word has length 34 [2022-12-14 03:09:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:30,038 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1384 transitions. [2022-12-14 03:09:30,038 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 03:09:30,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1384 transitions. [2022-12-14 03:09:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 03:09:30,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:30,038 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 03:09:30,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Ended with exit code 0 [2022-12-14 03:09:30,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:30,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:30,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 03:09:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:30,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627123805] [2022-12-14 03:09:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:30,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 03:09:30,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:30,247 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:30,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:30,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 03:09:30,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:30,406 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 03:09:30,511 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 03:09:30,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:30,511 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627123805] [2022-12-14 03:09:30,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627123805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:30,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:30,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900507487] [2022-12-14 03:09:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:30,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:30,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:30,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:30,513 INFO L87 Difference]: Start difference. First operand 1140 states and 1384 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 03:09:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:33,517 INFO L93 Difference]: Finished difference Result 1741 states and 2134 transitions. [2022-12-14 03:09:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:09:33,518 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 03:09:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:33,521 INFO L225 Difference]: With dead ends: 1741 [2022-12-14 03:09:33,521 INFO L226 Difference]: Without dead ends: 1741 [2022-12-14 03:09:33,521 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 03:09:33,521 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 1158 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:33,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2007 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 03:09:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-12-14 03:09:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1136. [2022-12-14 03:09:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 735 states have (on average 1.8639455782312926) internal successors, (1370), 1131 states have internal predecessors, (1370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1376 transitions. [2022-12-14 03:09:33,533 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1376 transitions. Word has length 34 [2022-12-14 03:09:33,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:33,534 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1376 transitions. [2022-12-14 03:09:33,534 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 03:09:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1376 transitions. [2022-12-14 03:09:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 03:09:33,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:33,534 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 03:09:33,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Ended with exit code 0 [2022-12-14 03:09:33,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:33,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 03:09:33,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:33,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312390857] [2022-12-14 03:09:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:33,738 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 03:09:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:33,739 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:33,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:33,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:09:33,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:33,935 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 03:09:33,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:33,935 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:33,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312390857] [2022-12-14 03:09:33,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312390857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:33,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:33,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:09:33,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150305806] [2022-12-14 03:09:33,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:33,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:33,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:33,936 INFO L87 Difference]: Start difference. First operand 1136 states and 1376 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 03:09:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:33,971 INFO L93 Difference]: Finished difference Result 1124 states and 1356 transitions. [2022-12-14 03:09:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:33,972 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 03:09:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:33,974 INFO L225 Difference]: With dead ends: 1124 [2022-12-14 03:09:33,974 INFO L226 Difference]: Without dead ends: 1124 [2022-12-14 03:09:33,974 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 03:09:33,974 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 903 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1841 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 03:09:33,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1841 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:33,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-12-14 03:09:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2022-12-14 03:09:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 723 states have (on average 1.8672199170124482) internal successors, (1350), 1119 states have internal predecessors, (1350), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1356 transitions. [2022-12-14 03:09:33,986 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1356 transitions. Word has length 52 [2022-12-14 03:09:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:33,986 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1356 transitions. [2022-12-14 03:09:33,986 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 03:09:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1356 transitions. [2022-12-14 03:09:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 03:09:33,986 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:33,987 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 03:09:34,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:34,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:34,188 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 03:09:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:34,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699738404] [2022-12-14 03:09:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:34,191 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 03:09:34,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:34,194 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:34,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:34,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 03:09:34,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:34,506 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 03:09:34,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 03:09:34,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 03:09:34,878 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 03:09:34,890 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 03:09:34,890 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 03:09:34,900 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 03:09:34,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:34,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:34,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699738404] [2022-12-14 03:09:34,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699738404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:34,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:34,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:09:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276865849] [2022-12-14 03:09:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:34,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:34,902 INFO L87 Difference]: Start difference. First operand 1124 states and 1356 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 03:09:37,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:37,219 INFO L93 Difference]: Finished difference Result 1536 states and 1893 transitions. [2022-12-14 03:09:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:37,220 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 03:09:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:37,226 INFO L225 Difference]: With dead ends: 1536 [2022-12-14 03:09:37,226 INFO L226 Difference]: Without dead ends: 1536 [2022-12-14 03:09:37,226 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 03:09:37,227 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1989 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:37,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 460 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 03:09:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-12-14 03:09:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1054. [2022-12-14 03:09:37,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 691 states have (on average 1.8031837916063675) internal successors, (1246), 1049 states have internal predecessors, (1246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1252 transitions. [2022-12-14 03:09:37,235 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1252 transitions. Word has length 60 [2022-12-14 03:09:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:37,236 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1252 transitions. [2022-12-14 03:09:37,236 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 03:09:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1252 transitions. [2022-12-14 03:09:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 03:09:37,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:37,236 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 03:09:37,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:37,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:37,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 03:09:37,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:37,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845907906] [2022-12-14 03:09:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:37,441 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 03:09:37,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:37,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:37,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:37,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 03:09:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:37,690 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 03:09:37,698 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 03:09:37,719 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 03:09:37,725 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 03:09:37,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:37,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:37,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845907906] [2022-12-14 03:09:37,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845907906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:37,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:37,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:09:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186203817] [2022-12-14 03:09:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:37,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:09:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:09:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:09:37,727 INFO L87 Difference]: Start difference. First operand 1054 states and 1252 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 03:09:39,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:39,616 INFO L93 Difference]: Finished difference Result 1053 states and 1251 transitions. [2022-12-14 03:09:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:09:39,617 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 03:09:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:39,619 INFO L225 Difference]: With dead ends: 1053 [2022-12-14 03:09:39,619 INFO L226 Difference]: Without dead ends: 1053 [2022-12-14 03:09:39,620 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 03:09:39,620 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 4 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:39,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2229 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 03:09:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-12-14 03:09:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2022-12-14 03:09:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 691 states have (on average 1.8017366136034731) internal successors, (1245), 1048 states have internal predecessors, (1245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1251 transitions. [2022-12-14 03:09:39,631 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1251 transitions. Word has length 65 [2022-12-14 03:09:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:39,631 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1251 transitions. [2022-12-14 03:09:39,631 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 03:09:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1251 transitions. [2022-12-14 03:09:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 03:09:39,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:39,632 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 03:09:39,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Forceful destruction successful, exit code 0 [2022-12-14 03:09:39,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:39,833 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 03:09:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:39,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732430755] [2022-12-14 03:09:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:39,837 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 03:09:39,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:39,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:39,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:40,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 03:09:40,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:40,137 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 03:09:40,150 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 03:09:40,157 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 03:09:40,196 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 03:09:40,200 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 03:09:40,210 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 03:09:40,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:40,211 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:40,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732430755] [2022-12-14 03:09:40,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732430755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:40,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:40,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:09:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696875729] [2022-12-14 03:09:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:40,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:09:40,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:09:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:09:40,212 INFO L87 Difference]: Start difference. First operand 1053 states and 1251 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 03:09:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:43,019 INFO L93 Difference]: Finished difference Result 1052 states and 1250 transitions. [2022-12-14 03:09:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:09:43,020 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 03:09:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:43,022 INFO L225 Difference]: With dead ends: 1052 [2022-12-14 03:09:43,022 INFO L226 Difference]: Without dead ends: 1052 [2022-12-14 03:09:43,022 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 03:09:43,022 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 2 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:43,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2270 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 03:09:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-12-14 03:09:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2022-12-14 03:09:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 690 states have (on average 1.8028985507246378) internal successors, (1244), 1047 states have internal predecessors, (1244), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:09:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1250 transitions. [2022-12-14 03:09:43,030 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1250 transitions. Word has length 65 [2022-12-14 03:09:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:43,030 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1250 transitions. [2022-12-14 03:09:43,030 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 03:09:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1250 transitions. [2022-12-14 03:09:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 03:09:43,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:43,031 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 03:09:43,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:43,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:43,232 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -337406705, now seen corresponding path program 1 times [2022-12-14 03:09:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:43,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331752426] [2022-12-14 03:09:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:43,235 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 03:09:43,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:43,236 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:43,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:43,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:09:43,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:43,548 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 03:09:43,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:09:43,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:43,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331752426] [2022-12-14 03:09:43,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331752426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:09:43,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:09:43,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 03:09:43,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761957673] [2022-12-14 03:09:43,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:09:43,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:09:43,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:43,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:09:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:09:43,549 INFO L87 Difference]: Start difference. First operand 1052 states and 1250 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 03:09:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:43,582 INFO L93 Difference]: Finished difference Result 1055 states and 1254 transitions. [2022-12-14 03:09:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:09:43,583 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 03:09:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:43,586 INFO L225 Difference]: With dead ends: 1055 [2022-12-14 03:09:43,586 INFO L226 Difference]: Without dead ends: 1055 [2022-12-14 03:09:43,586 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 03:09:43,586 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 2 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2629 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 03:09:43,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2629 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:09:43,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-12-14 03:09:43,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1055. [2022-12-14 03:09:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 692 states have (on average 1.8020231213872833) internal successors, (1247), 1050 states have internal predecessors, (1247), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 03:09:43,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1254 transitions. [2022-12-14 03:09:43,598 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1254 transitions. Word has length 73 [2022-12-14 03:09:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:43,598 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1254 transitions. [2022-12-14 03:09:43,598 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 03:09:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1254 transitions. [2022-12-14 03:09:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 03:09:43,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:43,599 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 03:09:43,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:43,799 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:43,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -842451762, now seen corresponding path program 1 times [2022-12-14 03:09:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:43,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301306912] [2022-12-14 03:09:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:43,800 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 03:09:43,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:43,801 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:43,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:44,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:09:44,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:44,049 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 03:09:44,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:44,106 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 03:09:44,107 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:44,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301306912] [2022-12-14 03:09:44,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301306912] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:44,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138588149] [2022-12-14 03:09:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:44,107 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:09:44,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:09:44,108 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:09:44,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-14 03:09:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:09:44,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:44,472 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 03:09:44,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:44,505 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 03:09:44,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [138588149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:44,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529476533] [2022-12-14 03:09:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:09:44,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:44,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:44,507 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:44,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 03:09:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:09:44,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:09:44,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:44,714 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 03:09:44,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:44,739 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 03:09:44,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529476533] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:44,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 03:09:44,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 03:09:44,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200312798] [2022-12-14 03:09:44,740 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 03:09:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 03:09:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:09:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 03:09:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:09:44,742 INFO L87 Difference]: Start difference. First operand 1055 states and 1254 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 03:09:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:09:44,881 INFO L93 Difference]: Finished difference Result 1067 states and 1271 transitions. [2022-12-14 03:09:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 03:09:44,882 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 03:09:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:09:44,884 INFO L225 Difference]: With dead ends: 1067 [2022-12-14 03:09:44,884 INFO L226 Difference]: Without dead ends: 1067 [2022-12-14 03:09:44,884 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 03:09:44,885 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 9 mSDsluCounter, 4371 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:09:44,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5250 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:09:44,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-12-14 03:09:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2022-12-14 03:09:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 701 states have (on average 1.8002853067047075) internal successors, (1262), 1059 states have internal predecessors, (1262), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 03:09:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1269 transitions. [2022-12-14 03:09:44,895 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1269 transitions. Word has length 74 [2022-12-14 03:09:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:09:44,895 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1269 transitions. [2022-12-14 03:09:44,896 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 03:09:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1269 transitions. [2022-12-14 03:09:44,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 03:09:44,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:09:44,896 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 03:09:44,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Forceful destruction successful, exit code 0 [2022-12-14 03:09:45,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-12-14 03:09:45,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 03:09:45,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:45,499 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:09:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:09:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 137170127, now seen corresponding path program 2 times [2022-12-14 03:09:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:09:45,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421581014] [2022-12-14 03:09:45,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 03:09:45,503 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 03:09:45,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:09:45,504 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:09:45,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Waiting until timeout for monitored process [2022-12-14 03:09:45,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 03:09:45,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:45,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 03:09:45,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:45,933 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 03:09:45,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:46,056 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 03:09:46,056 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:09:46,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421581014] [2022-12-14 03:09:46,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421581014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:46,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1634744295] [2022-12-14 03:09:46,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 03:09:46,057 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:09:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:09:46,058 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:09:46,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 03:09:47,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 03:09:47,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:09:47,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 03:09:47,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:09:47,386 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 03:09:47,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:09:47,442 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 03:09:47,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1634744295] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:09:47,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547633807] [2022-12-14 03:09:47,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 03:09:47,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:09:47,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:09:47,443 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:09:47,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 03:10:02,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 03:10:02,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:10:02,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 03:10:02,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:10:02,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 03:10:02,486 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 03:10:02,486 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 03:10:02,523 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 03:10:02,531 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 03:10:02,674 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 03:10:02,679 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 03:10:02,745 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1586 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1586) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1587 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1587) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 03:10:02,755 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1588 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1588))) (exists ((v_ArrVal_1589 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1589))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 03:10:02,766 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591))) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 03:10:02,776 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 03:10:02,817 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 03:10:02,817 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 03:10:02,826 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 03:10:02,885 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 03:10:02,890 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 03:10:02,926 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 03:10:02,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:10:03,186 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1604 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1604) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-12-14 03:10:03,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547633807] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:10:03,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 03:10:03,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 03:10:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272996070] [2022-12-14 03:10:03,192 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 03:10:03,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 03:10:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 03:10:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 03:10:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-12-14 03:10:03,194 INFO L87 Difference]: Start difference. First operand 1065 states and 1269 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 03:10:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:10:12,619 INFO L93 Difference]: Finished difference Result 1538 states and 1873 transitions. [2022-12-14 03:10:12,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 03:10:12,620 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 03:10:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:10:12,624 INFO L225 Difference]: With dead ends: 1538 [2022-12-14 03:10:12,624 INFO L226 Difference]: Without dead ends: 1532 [2022-12-14 03:10:12,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=421, Invalid=1937, Unknown=14, NotChecked=490, Total=2862 [2022-12-14 03:10:12,627 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 2072 mSDsluCounter, 3791 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 4266 SdHoareTripleChecker+Invalid, 10709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5230 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:10:12,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 4266 Invalid, 10709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 5439 Invalid, 0 Unknown, 5230 Unchecked, 8.3s Time] [2022-12-14 03:10:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-12-14 03:10:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1074. [2022-12-14 03:10:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 710 states have (on average 1.7929577464788733) internal successors, (1273), 1068 states have internal predecessors, (1273), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 03:10:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1280 transitions. [2022-12-14 03:10:12,638 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1280 transitions. Word has length 77 [2022-12-14 03:10:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:10:12,638 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1280 transitions. [2022-12-14 03:10:12,639 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 03:10:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1280 transitions. [2022-12-14 03:10:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 03:10:12,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:10:12,639 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 03:10:12,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-12-14 03:10:12,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 03:10:13,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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)] Ended with exit code 0 [2022-12-14 03:10:13,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:10:13,242 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-12-14 03:10:13,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:10:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash 203603055, now seen corresponding path program 3 times [2022-12-14 03:10:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:10:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861421086] [2022-12-14 03:10:13,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:10:13,245 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 03:10:13,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:10:13,247 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 03:10:13,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/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 (24)] Waiting until timeout for monitored process [2022-12-14 03:10:13,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 03:10:13,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:10:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 03:10:13,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:10:14,033 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 03:10:14,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:10:14,715 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 03:10:14,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 03:10:14,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861421086] [2022-12-14 03:10:14,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861421086] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:10:14,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1765345443] [2022-12-14 03:10:14,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:10:14,715 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 03:10:14,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 03:10:14,716 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 03:10:14,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 03:10:18,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 03:10:18,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:10:18,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 03:10:18,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:10:18,973 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 03:10:18,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:10:19,141 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 03:10:19,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1765345443] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:10:19,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869219822] [2022-12-14 03:10:19,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:10:19,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:10:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:10:19,142 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:10:19,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760bef22-a83c-4855-8800-bc3940530c25/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process