./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:37:26,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:37:26,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:37:26,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:37:26,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:37:26,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:37:26,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:37:26,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:37:26,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:37:26,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:37:26,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:37:26,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:37:26,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:37:26,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:37:26,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:37:26,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:37:26,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:37:26,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:37:26,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:37:26,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:37:26,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:37:26,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:37:26,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:37:26,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:37:26,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:37:26,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:37:26,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:37:26,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:37:26,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:37:26,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:37:26,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:37:26,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:37:26,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:37:26,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:37:26,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:37:26,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:37:26,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:37:26,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:37:26,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:37:26,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:37:26,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:37:26,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 08:37:26,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:37:26,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:37:26,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:37:26,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:37:26,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:37:26,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:37:26,924 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:37:26,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:37:26,925 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:37:26,925 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:37:26,925 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:37:26,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:37:26,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:37:26,926 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:37:26,926 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:37:26,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:37:26,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:37:26,926 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:37:26,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 08:37:26,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 08:37:26,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:37:26,927 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:37:26,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:37:26,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:37:26,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:37:26,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:37:26,928 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 08:37:26,928 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 08:37:26,929 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 08:37:26,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:37:26,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:37:26,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:37:26,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:37:26,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:37:26,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:37:26,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:37:26,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:37:26,930 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:37:26,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:37:26,930 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:37:26,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:37:26,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:37:26,931 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2022-12-14 08:37:27,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:37:27,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:37:27,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:37:27,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:37:27,153 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:37:27,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2022-12-14 08:37:29,774 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:37:29,992 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:37:29,993 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2022-12-14 08:37:30,006 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data/9c5065b94/6312df7d5b3849dc9b4e2c924cb2da19/FLAG0ca5cc1d4 [2022-12-14 08:37:30,335 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data/9c5065b94/6312df7d5b3849dc9b4e2c924cb2da19 [2022-12-14 08:37:30,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:37:30,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:37:30,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:37:30,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:37:30,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:37:30,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:37:30" (1/1) ... [2022-12-14 08:37:30,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77641cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:30, skipping insertion in model container [2022-12-14 08:37:30,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:37:30" (1/1) ... [2022-12-14 08:37:30,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:37:30,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:37:30,637 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2022-12-14 08:37:30,717 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:37:30,727 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2022-12-14 08:37:30,728 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2022-12-14 08:37:30,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:37:30,758 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 08:37:30,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@771e676f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:30, skipping insertion in model container [2022-12-14 08:37:30,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:37:30,759 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 08:37:30,761 INFO L158 Benchmark]: Toolchain (without parser) took 421.87ms. Allocated memory is still 184.5MB. Free memory was 147.0MB in the beginning and 127.3MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 08:37:30,762 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 184.5MB. Free memory was 153.1MB in the beginning and 153.0MB in the end (delta: 162.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:37:30,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.70ms. Allocated memory is still 184.5MB. Free memory was 147.0MB in the beginning and 127.3MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 08:37:30,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 184.5MB. Free memory was 153.1MB in the beginning and 153.0MB in the end (delta: 162.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.70ms. Allocated memory is still 184.5MB. Free memory was 147.0MB in the beginning and 127.3MB in the end (delta: 19.7MB). 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:37:32,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:37:32,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:37:32,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:37:32,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:37:32,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:37:32,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:37:32,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:37:32,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:37:32,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:37:32,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:37:32,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:37:32,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:37:32,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:37:32,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:37:32,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:37:32,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:37:32,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:37:32,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:37:32,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:37:32,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:37:32,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:37:32,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:37:32,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:37:32,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:37:32,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:37:32,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:37:32,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:37:32,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:37:32,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:37:32,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:37:32,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:37:32,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:37:32,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:37:32,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:37:32,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:37:32,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:37:32,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:37:32,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:37:32,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:37:32,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:37:32,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 08:37:32,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:37:32,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:37:32,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:37:32,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:37:32,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:37:32,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:37:32,394 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:37:32,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:37:32,394 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:37:32,395 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:37:32,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:37:32,395 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:37:32,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 08:37:32,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 08:37:32,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:37:32,396 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:37:32,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:37:32,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:37:32,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:37:32,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:37:32,397 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 08:37:32,397 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 08:37:32,398 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 08:37:32,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:37:32,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:37:32,398 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:37:32,398 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:37:32,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:37:32,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:37:32,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:37:32,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:37:32,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:37:32,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:37:32,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:37:32,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:37:32,400 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:37:32,400 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:37:32,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:37:32,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:37:32,401 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2022-12-14 08:37:32,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:37:32,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:37:32,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:37:32,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:37:32,682 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:37:32,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2022-12-14 08:37:35,237 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:37:35,481 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:37:35,482 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2022-12-14 08:37:35,495 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data/486f597d9/19aca9f1e773413b846e8946c624c7f1/FLAG8f43138ee [2022-12-14 08:37:35,510 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/data/486f597d9/19aca9f1e773413b846e8946c624c7f1 [2022-12-14 08:37:35,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:37:35,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:37:35,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:37:35,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:37:35,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:37:35,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:37:35" (1/1) ... [2022-12-14 08:37:35,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e3bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:35, skipping insertion in model container [2022-12-14 08:37:35,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:37:35" (1/1) ... [2022-12-14 08:37:35,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:37:35,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:37:35,938 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2022-12-14 08:37:35,996 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:37:36,004 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2022-12-14 08:37:36,005 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2022-12-14 08:37:36,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:37:36,024 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 08:37:36,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:37:36,049 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2022-12-14 08:37:36,074 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:37:36,078 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2022-12-14 08:37:36,079 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2022-12-14 08:37:36,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:37:36,088 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:37:36,104 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2022-12-14 08:37:36,132 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:37:36,138 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2022-12-14 08:37:36,139 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_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2022-12-14 08:37:36,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:37:36,192 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:37:36,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36 WrapperNode [2022-12-14 08:37:36,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:37:36,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:37:36,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:37:36,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:37:36,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,282 INFO L138 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1171 [2022-12-14 08:37:36,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:37:36,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:37:36,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:37:36,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:37:36,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:37:36,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:37:36,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:37:36,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:37:36,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (1/1) ... [2022-12-14 08:37:36,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:37:36,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:37:36,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:37:36,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 08:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 08:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 08:37:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 08:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:37:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:37:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 08:37:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:37:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:37:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 08:37:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:37:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:37:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:37:36,610 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:37:36,612 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:37:36,618 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 08:37:40,442 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:37:40,456 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:37:40,457 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-14 08:37:40,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:37:40 BoogieIcfgContainer [2022-12-14 08:37:40,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:37:40,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:37:40,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:37:40,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:37:40,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:37:35" (1/3) ... [2022-12-14 08:37:40,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7341e3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:37:40, skipping insertion in model container [2022-12-14 08:37:40,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:37:36" (2/3) ... [2022-12-14 08:37:40,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7341e3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:37:40, skipping insertion in model container [2022-12-14 08:37:40,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:37:40" (3/3) ... [2022-12-14 08:37:40,468 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2022-12-14 08:37:40,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:37:40,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2022-12-14 08:37:40,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:37:40,554 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;@2f5366ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:37:40,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2022-12-14 08:37:40,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 1248 states, 611 states have (on average 2.2667757774140753) internal successors, (1385), 1243 states have internal predecessors, (1385), 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 08:37:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 08:37:40,567 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:40,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 08:37:40,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 08:37:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:40,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845403957] [2022-12-14 08:37:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:40,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:40,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:40,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:40,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 08:37:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:40,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:37:40,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:40,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:37:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:40,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:40,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:40,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845403957] [2022-12-14 08:37:40,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845403957] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:40,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:40,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:37:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920233649] [2022-12-14 08:37:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:40,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:37:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:40,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:37:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:40,799 INFO L87 Difference]: Start difference. First operand has 1248 states, 611 states have (on average 2.2667757774140753) internal successors, (1385), 1243 states have internal predecessors, (1385), 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 08:37:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:42,617 INFO L93 Difference]: Finished difference Result 1416 states and 1490 transitions. [2022-12-14 08:37:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:37:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 08:37:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:42,636 INFO L225 Difference]: With dead ends: 1416 [2022-12-14 08:37:42,636 INFO L226 Difference]: Without dead ends: 1414 [2022-12-14 08:37:42,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:42,640 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 1158 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:42,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 891 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 08:37:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-12-14 08:37:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1229. [2022-12-14 08:37:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 609 states have (on average 2.116584564860427) internal successors, (1289), 1224 states have internal predecessors, (1289), 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 08:37:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1295 transitions. [2022-12-14 08:37:42,719 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1295 transitions. Word has length 3 [2022-12-14 08:37:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:42,719 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1295 transitions. [2022-12-14 08:37:42,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1295 transitions. [2022-12-14 08:37:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 08:37:42,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:42,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 08:37:42,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:37:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:42,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 08:37:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:42,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651854194] [2022-12-14 08:37:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:42,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:42,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:42,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 08:37:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:43,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:37:43,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:43,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:37:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:43,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:43,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:43,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651854194] [2022-12-14 08:37:43,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651854194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:43,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:43,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:37:43,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010288450] [2022-12-14 08:37:43,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:43,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:37:43,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:37:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:43,104 INFO L87 Difference]: Start difference. First operand 1229 states and 1295 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:46,270 INFO L93 Difference]: Finished difference Result 1818 states and 1924 transitions. [2022-12-14 08:37:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:37:46,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 08:37:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:46,275 INFO L225 Difference]: With dead ends: 1818 [2022-12-14 08:37:46,275 INFO L226 Difference]: Without dead ends: 1818 [2022-12-14 08:37:46,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:46,277 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 629 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:46,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1686 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 08:37:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-12-14 08:37:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1430. [2022-12-14 08:37:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 811 states have (on average 2.098643649815043) internal successors, (1702), 1425 states have internal predecessors, (1702), 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 08:37:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1708 transitions. [2022-12-14 08:37:46,307 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1708 transitions. Word has length 3 [2022-12-14 08:37:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:46,308 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1708 transitions. [2022-12-14 08:37:46,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1708 transitions. [2022-12-14 08:37:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:37:46,308 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:46,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:46,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 08:37:46,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:46,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 08:37:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:46,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137811233] [2022-12-14 08:37:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:46,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:46,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:46,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 08:37:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:46,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:37:46,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:46,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:37:46,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:37:46,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:37:46,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 08:37:46,694 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 08:37:46,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 08:37:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:46,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:46,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137811233] [2022-12-14 08:37:46,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137811233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:46,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:46,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:37:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47297814] [2022-12-14 08:37:46,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:46,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:37:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:37:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:37:46,715 INFO L87 Difference]: Start difference. First operand 1430 states and 1708 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:49,747 INFO L93 Difference]: Finished difference Result 1608 states and 1897 transitions. [2022-12-14 08:37:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:37:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 08:37:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:49,753 INFO L225 Difference]: With dead ends: 1608 [2022-12-14 08:37:49,753 INFO L226 Difference]: Without dead ends: 1608 [2022-12-14 08:37:49,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:37:49,754 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 2584 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:49,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 501 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 08:37:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-12-14 08:37:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1218. [2022-12-14 08:37:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 609 states have (on average 2.09688013136289) internal successors, (1277), 1213 states have internal predecessors, (1277), 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 08:37:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1283 transitions. [2022-12-14 08:37:49,768 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1283 transitions. Word has length 7 [2022-12-14 08:37:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:49,769 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1283 transitions. [2022-12-14 08:37:49,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1283 transitions. [2022-12-14 08:37:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:37:49,769 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:49,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:49,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 08:37:49,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:49,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 08:37:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:49,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998680646] [2022-12-14 08:37:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:49,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:49,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:49,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:49,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 08:37:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:50,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:37:50,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:50,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:37:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:50,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:50,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:50,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998680646] [2022-12-14 08:37:50,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998680646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:50,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:50,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:37:50,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823612918] [2022-12-14 08:37:50,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:50,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:37:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:37:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:50,069 INFO L87 Difference]: Start difference. First operand 1218 states and 1283 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:51,945 INFO L93 Difference]: Finished difference Result 1547 states and 1641 transitions. [2022-12-14 08:37:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:37:51,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 08:37:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:51,949 INFO L225 Difference]: With dead ends: 1547 [2022-12-14 08:37:51,949 INFO L226 Difference]: Without dead ends: 1547 [2022-12-14 08:37:51,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:51,950 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 971 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:51,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1474 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 08:37:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-12-14 08:37:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1171. [2022-12-14 08:37:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 609 states have (on average 2.019704433497537) internal successors, (1230), 1166 states have internal predecessors, (1230), 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 08:37:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1236 transitions. [2022-12-14 08:37:51,964 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1236 transitions. Word has length 8 [2022-12-14 08:37:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:51,964 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1236 transitions. [2022-12-14 08:37:51,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1236 transitions. [2022-12-14 08:37:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:37:51,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:51,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:51,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 08:37:52,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:52,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:52,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 08:37:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:52,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657244555] [2022-12-14 08:37:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:52,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:52,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:52,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:52,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 08:37:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:52,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:37:52,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:52,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:37:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:52,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:52,280 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:52,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657244555] [2022-12-14 08:37:52,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657244555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:52,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:52,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:37:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085486468] [2022-12-14 08:37:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:52,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:37:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:37:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:52,282 INFO L87 Difference]: Start difference. First operand 1171 states and 1236 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:54,962 INFO L93 Difference]: Finished difference Result 1626 states and 1723 transitions. [2022-12-14 08:37:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:37:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 08:37:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:54,965 INFO L225 Difference]: With dead ends: 1626 [2022-12-14 08:37:54,965 INFO L226 Difference]: Without dead ends: 1626 [2022-12-14 08:37:54,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:54,966 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 674 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:54,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1851 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 08:37:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-12-14 08:37:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1193. [2022-12-14 08:37:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 641 states have (on average 2.0062402496099843) internal successors, (1286), 1188 states have internal predecessors, (1286), 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 08:37:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1292 transitions. [2022-12-14 08:37:54,983 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1292 transitions. Word has length 8 [2022-12-14 08:37:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:54,983 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1292 transitions. [2022-12-14 08:37:54,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1292 transitions. [2022-12-14 08:37:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:37:54,984 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:54,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:54,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 08:37:55,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:55,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:55,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash 693877877, now seen corresponding path program 1 times [2022-12-14 08:37:55,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:55,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503389995] [2022-12-14 08:37:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:55,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:55,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:55,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 08:37:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:55,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:37:55,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:55,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:55,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:55,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503389995] [2022-12-14 08:37:55,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503389995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:55,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:55,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:37:55,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183372739] [2022-12-14 08:37:55,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:55,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:37:55,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:37:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:37:55,314 INFO L87 Difference]: Start difference. First operand 1193 states and 1292 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 08:37:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:56,043 INFO L93 Difference]: Finished difference Result 1840 states and 1982 transitions. [2022-12-14 08:37:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:37:56,044 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 08:37:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:56,052 INFO L225 Difference]: With dead ends: 1840 [2022-12-14 08:37:56,052 INFO L226 Difference]: Without dead ends: 1840 [2022-12-14 08:37:56,052 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 08:37:56,052 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 755 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:56,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 3639 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 08:37:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-12-14 08:37:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1438. [2022-12-14 08:37:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 886 states have (on average 1.9706546275395034) internal successors, (1746), 1433 states have internal predecessors, (1746), 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 08:37:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1752 transitions. [2022-12-14 08:37:56,071 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1752 transitions. Word has length 11 [2022-12-14 08:37:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:56,071 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 1752 transitions. [2022-12-14 08:37:56,071 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 08:37:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1752 transitions. [2022-12-14 08:37:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:37:56,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:56,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:56,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 08:37:56,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:56,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-12-14 08:37:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102892820] [2022-12-14 08:37:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:56,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:56,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:56,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:56,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 08:37:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:56,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:37:56,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:56,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:56,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:56,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102892820] [2022-12-14 08:37:56,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102892820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:56,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:56,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:37:56,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548557347] [2022-12-14 08:37:56,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:56,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:37:56,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:56,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:37:56,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:56,429 INFO L87 Difference]: Start difference. First operand 1438 states and 1752 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:56,455 INFO L93 Difference]: Finished difference Result 1600 states and 1900 transitions. [2022-12-14 08:37:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:37:56,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 08:37:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:56,457 INFO L225 Difference]: With dead ends: 1600 [2022-12-14 08:37:56,457 INFO L226 Difference]: Without dead ends: 1600 [2022-12-14 08:37:56,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:56,458 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 583 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:56,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1994 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:37:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-12-14 08:37:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1378. [2022-12-14 08:37:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 850 states have (on average 1.9529411764705882) internal successors, (1660), 1373 states have internal predecessors, (1660), 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 08:37:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1666 transitions. [2022-12-14 08:37:56,479 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1666 transitions. Word has length 13 [2022-12-14 08:37:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:56,480 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1666 transitions. [2022-12-14 08:37:56,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:56,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1666 transitions. [2022-12-14 08:37:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 08:37:56,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:56,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:56,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 08:37:56,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:56,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-12-14 08:37:56,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:56,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449315167] [2022-12-14 08:37:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:56,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:56,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:56,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:56,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 08:37:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:56,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:37:56,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:56,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:56,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:56,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449315167] [2022-12-14 08:37:56,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449315167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:56,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:56,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:37:56,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842305415] [2022-12-14 08:37:56,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:56,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:37:56,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:37:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:37:56,795 INFO L87 Difference]: Start difference. First operand 1378 states and 1666 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:56,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:56,849 INFO L93 Difference]: Finished difference Result 1572 states and 1844 transitions. [2022-12-14 08:37:56,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:37:56,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-12-14 08:37:56,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:56,851 INFO L225 Difference]: With dead ends: 1572 [2022-12-14 08:37:56,852 INFO L226 Difference]: Without dead ends: 1572 [2022-12-14 08:37:56,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:37:56,852 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 564 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:56,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 3077 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:37:56,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2022-12-14 08:37:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1348. [2022-12-14 08:37:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 834 states have (on average 1.920863309352518) internal successors, (1602), 1343 states have internal predecessors, (1602), 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 08:37:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1608 transitions. [2022-12-14 08:37:56,870 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1608 transitions. Word has length 15 [2022-12-14 08:37:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:56,870 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1608 transitions. [2022-12-14 08:37:56,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1608 transitions. [2022-12-14 08:37:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 08:37:56,871 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:56,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:56,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 08:37:57,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:57,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 314592142, now seen corresponding path program 1 times [2022-12-14 08:37:57,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:57,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25433131] [2022-12-14 08:37:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:57,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:57,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:57,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:57,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 08:37:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:57,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:37:57,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:57,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:37:57,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:37:57,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-12-14 08:37:57,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:37:57,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-12-14 08:37:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:57,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:57,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:57,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25433131] [2022-12-14 08:37:57,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25433131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:57,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:57,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:37:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737832504] [2022-12-14 08:37:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:57,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:37:57,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:37:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:37:57,258 INFO L87 Difference]: Start difference. First operand 1348 states and 1608 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:58,575 INFO L93 Difference]: Finished difference Result 1784 states and 2103 transitions. [2022-12-14 08:37:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:37:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-12-14 08:37:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:58,578 INFO L225 Difference]: With dead ends: 1784 [2022-12-14 08:37:58,578 INFO L226 Difference]: Without dead ends: 1784 [2022-12-14 08:37:58,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:37:58,579 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 425 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:58,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 3200 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 08:37:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-12-14 08:37:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1347. [2022-12-14 08:37:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 833 states have (on average 1.9207683073229291) internal successors, (1600), 1342 states have internal predecessors, (1600), 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 08:37:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1606 transitions. [2022-12-14 08:37:58,590 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1606 transitions. Word has length 16 [2022-12-14 08:37:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:58,590 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 1606 transitions. [2022-12-14 08:37:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1606 transitions. [2022-12-14 08:37:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 08:37:58,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:58,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:58,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 08:37:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:58,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:58,793 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 08:37:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:58,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113812268] [2022-12-14 08:37:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:58,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:58,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:58,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:58,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 08:37:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:58,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:37:58,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:58,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:58,977 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:58,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113812268] [2022-12-14 08:37:58,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113812268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:58,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:58,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:37:58,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446211675] [2022-12-14 08:37:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:58,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:37:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:37:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:58,978 INFO L87 Difference]: Start difference. First operand 1347 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:58,998 INFO L93 Difference]: Finished difference Result 1287 states and 1520 transitions. [2022-12-14 08:37:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:37:58,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 08:37:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:59,000 INFO L225 Difference]: With dead ends: 1287 [2022-12-14 08:37:59,000 INFO L226 Difference]: Without dead ends: 1287 [2022-12-14 08:37:59,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:37:59,001 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 1085 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:59,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1123 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:37:59,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-12-14 08:37:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1287. [2022-12-14 08:37:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 797 states have (on average 1.8996235884567128) internal successors, (1514), 1282 states have internal predecessors, (1514), 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 08:37:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1520 transitions. [2022-12-14 08:37:59,010 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1520 transitions. Word has length 18 [2022-12-14 08:37:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:59,011 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1520 transitions. [2022-12-14 08:37:59,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1520 transitions. [2022-12-14 08:37:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 08:37:59,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:59,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:59,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-14 08:37:59,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:59,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:59,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 08:37:59,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:59,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533767138] [2022-12-14 08:37:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:59,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:59,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:59,219 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:59,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 08:37:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:59,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:37:59,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:59,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:59,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:59,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533767138] [2022-12-14 08:37:59,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533767138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:59,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:59,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:37:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296326055] [2022-12-14 08:37:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:59,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:37:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:59,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:37:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:37:59,410 INFO L87 Difference]: Start difference. First operand 1287 states and 1520 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:37:59,462 INFO L93 Difference]: Finished difference Result 1259 states and 1464 transitions. [2022-12-14 08:37:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:37:59,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 08:37:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:37:59,465 INFO L225 Difference]: With dead ends: 1259 [2022-12-14 08:37:59,466 INFO L226 Difference]: Without dead ends: 1259 [2022-12-14 08:37:59,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:37:59,466 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1066 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:37:59,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 2127 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:37:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-12-14 08:37:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1257. [2022-12-14 08:37:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 781 states have (on average 1.8642765685019207) internal successors, (1456), 1252 states have internal predecessors, (1456), 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 08:37:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1462 transitions. [2022-12-14 08:37:59,477 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1462 transitions. Word has length 20 [2022-12-14 08:37:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:37:59,477 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1462 transitions. [2022-12-14 08:37:59,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:37:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1462 transitions. [2022-12-14 08:37:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 08:37:59,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:37:59,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:37:59,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 08:37:59,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:59,679 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:37:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:37:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 08:37:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:37:59,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603433143] [2022-12-14 08:37:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:37:59,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:37:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:37:59,685 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:37:59,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 08:37:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:37:59,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:37:59,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:37:59,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:37:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:37:59,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:37:59,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:37:59,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603433143] [2022-12-14 08:37:59,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603433143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:37:59,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:37:59,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:37:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303552482] [2022-12-14 08:37:59,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:37:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:37:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:37:59,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:37:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:37:59,946 INFO L87 Difference]: Start difference. First operand 1257 states and 1462 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:02,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:02,011 INFO L93 Difference]: Finished difference Result 1837 states and 2165 transitions. [2022-12-14 08:38:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:38:02,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 08:38:02,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:02,016 INFO L225 Difference]: With dead ends: 1837 [2022-12-14 08:38:02,016 INFO L226 Difference]: Without dead ends: 1837 [2022-12-14 08:38:02,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:38:02,016 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1710 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:02,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 1215 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 08:38:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2022-12-14 08:38:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1253. [2022-12-14 08:38:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 781 states have (on average 1.854033290653009) internal successors, (1448), 1248 states have internal predecessors, (1448), 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 08:38:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1454 transitions. [2022-12-14 08:38:02,026 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1454 transitions. Word has length 34 [2022-12-14 08:38:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:02,027 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 1454 transitions. [2022-12-14 08:38:02,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1454 transitions. [2022-12-14 08:38:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 08:38:02,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:02,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:02,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 08:38:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:02,228 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 08:38:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:02,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377874704] [2022-12-14 08:38:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:02,230 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:02,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 08:38:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:02,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:38:02,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:02,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:38:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:02,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:38:02,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377874704] [2022-12-14 08:38:02,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377874704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:38:02,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:38:02,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:38:02,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367988930] [2022-12-14 08:38:02,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:38:02,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:38:02,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:38:02,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:38:02,493 INFO L87 Difference]: Start difference. First operand 1253 states and 1454 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:05,893 INFO L93 Difference]: Finished difference Result 1967 states and 2274 transitions. [2022-12-14 08:38:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:38:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 08:38:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:05,900 INFO L225 Difference]: With dead ends: 1967 [2022-12-14 08:38:05,900 INFO L226 Difference]: Without dead ends: 1967 [2022-12-14 08:38:05,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:38:05,901 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1212 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:05,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 2453 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 08:38:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-12-14 08:38:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1249. [2022-12-14 08:38:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 781 states have (on average 1.8437900128040974) internal successors, (1440), 1244 states have internal predecessors, (1440), 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 08:38:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1446 transitions. [2022-12-14 08:38:05,911 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1446 transitions. Word has length 34 [2022-12-14 08:38:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:05,911 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1446 transitions. [2022-12-14 08:38:05,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1446 transitions. [2022-12-14 08:38:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:38:05,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:05,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:05,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 08:38:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:06,113 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:06,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 08:38:06,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:06,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941097762] [2022-12-14 08:38:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:06,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:06,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:06,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:06,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 08:38:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:38:06,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:06,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:38:06,340 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:06,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941097762] [2022-12-14 08:38:06,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941097762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:38:06,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:38:06,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:38:06,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668464153] [2022-12-14 08:38:06,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:38:06,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:38:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:06,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:38:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:38:06,342 INFO L87 Difference]: Start difference. First operand 1249 states and 1446 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:06,386 INFO L93 Difference]: Finished difference Result 1237 states and 1426 transitions. [2022-12-14 08:38:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:38:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 08:38:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:06,388 INFO L225 Difference]: With dead ends: 1237 [2022-12-14 08:38:06,388 INFO L226 Difference]: Without dead ends: 1237 [2022-12-14 08:38:06,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:38:06,389 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1035 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:06,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 2105 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:38:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-12-14 08:38:06,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1237. [2022-12-14 08:38:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 769 states have (on average 1.846553966189857) internal successors, (1420), 1232 states have internal predecessors, (1420), 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 08:38:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1426 transitions. [2022-12-14 08:38:06,398 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1426 transitions. Word has length 52 [2022-12-14 08:38:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:06,398 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1426 transitions. [2022-12-14 08:38:06,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1426 transitions. [2022-12-14 08:38:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 08:38:06,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:06,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:06,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 08:38:06,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:06,600 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:06,601 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 08:38:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:06,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286106085] [2022-12-14 08:38:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:06,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:06,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:06,606 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:06,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 08:38:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:06,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 08:38:06,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:06,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:38:06,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:38:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:38:07,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 08:38:07,295 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 08:38:07,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 08:38:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:07,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:38:07,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:07,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286106085] [2022-12-14 08:38:07,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286106085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:38:07,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:38:07,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:38:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530197788] [2022-12-14 08:38:07,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:38:07,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:38:07,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:38:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:38:07,308 INFO L87 Difference]: Start difference. First operand 1237 states and 1426 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:09,747 INFO L93 Difference]: Finished difference Result 1585 states and 1891 transitions. [2022-12-14 08:38:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:38:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 08:38:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:09,753 INFO L225 Difference]: With dead ends: 1585 [2022-12-14 08:38:09,753 INFO L226 Difference]: Without dead ends: 1585 [2022-12-14 08:38:09,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:38:09,753 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1055 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:09,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 787 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 08:38:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-12-14 08:38:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1167. [2022-12-14 08:38:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 737 states have (on average 1.78561736770692) internal successors, (1316), 1162 states have internal predecessors, (1316), 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 08:38:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1322 transitions. [2022-12-14 08:38:09,764 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1322 transitions. Word has length 60 [2022-12-14 08:38:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:09,765 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1322 transitions. [2022-12-14 08:38:09,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1322 transitions. [2022-12-14 08:38:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:38:09,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:09,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:09,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-14 08:38:09,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:09,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 08:38:09,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:09,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482465468] [2022-12-14 08:38:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:09,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:09,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:09,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:09,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 08:38:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:10,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:38:10,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:10,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 08:38:10,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:38:10,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 08:38:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:10,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:38:10,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482465468] [2022-12-14 08:38:10,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482465468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:38:10,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:38:10,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:38:10,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565517333] [2022-12-14 08:38:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:38:10,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:38:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:38:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:38:10,233 INFO L87 Difference]: Start difference. First operand 1167 states and 1322 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:12,556 INFO L93 Difference]: Finished difference Result 1166 states and 1321 transitions. [2022-12-14 08:38:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:38:12,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 08:38:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:12,558 INFO L225 Difference]: With dead ends: 1166 [2022-12-14 08:38:12,558 INFO L226 Difference]: Without dead ends: 1166 [2022-12-14 08:38:12,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:38:12,559 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 4 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:12,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2556 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 08:38:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-12-14 08:38:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2022-12-14 08:38:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 737 states have (on average 1.7842605156037992) internal successors, (1315), 1161 states have internal predecessors, (1315), 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 08:38:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1321 transitions. [2022-12-14 08:38:12,567 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1321 transitions. Word has length 65 [2022-12-14 08:38:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:12,567 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1321 transitions. [2022-12-14 08:38:12,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1321 transitions. [2022-12-14 08:38:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:38:12,568 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:12,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:12,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 08:38:12,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:12,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:12,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:12,770 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 08:38:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:12,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024081249] [2022-12-14 08:38:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:12,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:12,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:12,774 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:12,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 08:38:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:12,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:38:13,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:13,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:38:13,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:38:13,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:38:13,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 08:38:13,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-14 08:38:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:13,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:38:13,093 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:13,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024081249] [2022-12-14 08:38:13,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024081249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:38:13,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:38:13,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:38:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112839744] [2022-12-14 08:38:13,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:38:13,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:38:13,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:38:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:38:13,094 INFO L87 Difference]: Start difference. First operand 1166 states and 1321 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:16,006 INFO L93 Difference]: Finished difference Result 1165 states and 1320 transitions. [2022-12-14 08:38:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:38:16,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 08:38:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:16,009 INFO L225 Difference]: With dead ends: 1165 [2022-12-14 08:38:16,009 INFO L226 Difference]: Without dead ends: 1165 [2022-12-14 08:38:16,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:38:16,010 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 2 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:16,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2613 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 08:38:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-12-14 08:38:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2022-12-14 08:38:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 736 states have (on average 1.7853260869565217) internal successors, (1314), 1160 states have internal predecessors, (1314), 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 08:38:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1320 transitions. [2022-12-14 08:38:16,018 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1320 transitions. Word has length 65 [2022-12-14 08:38:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:16,019 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1320 transitions. [2022-12-14 08:38:16,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:38:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1320 transitions. [2022-12-14 08:38:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 08:38:16,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:16,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:16,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-14 08:38:16,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:16,221 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash -951740241, now seen corresponding path program 1 times [2022-12-14 08:38:16,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:16,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228147322] [2022-12-14 08:38:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:16,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:16,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:16,225 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:16,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 08:38:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:16,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:38:16,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:16,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:38:16,466 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:16,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228147322] [2022-12-14 08:38:16,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228147322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:38:16,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:38:16,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:38:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250480635] [2022-12-14 08:38:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:38:16,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:38:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:38:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:38:16,468 INFO L87 Difference]: Start difference. First operand 1165 states and 1320 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:38:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:16,505 INFO L93 Difference]: Finished difference Result 1168 states and 1324 transitions. [2022-12-14 08:38:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:38:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-12-14 08:38:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:16,510 INFO L225 Difference]: With dead ends: 1168 [2022-12-14 08:38:16,510 INFO L226 Difference]: Without dead ends: 1168 [2022-12-14 08:38:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:38:16,511 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 2 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:16,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3025 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:38:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-12-14 08:38:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2022-12-14 08:38:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 738 states have (on average 1.7845528455284554) internal successors, (1317), 1163 states have internal predecessors, (1317), 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 08:38:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1324 transitions. [2022-12-14 08:38:16,533 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1324 transitions. Word has length 73 [2022-12-14 08:38:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:16,533 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1324 transitions. [2022-12-14 08:38:16,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:38:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1324 transitions. [2022-12-14 08:38:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 08:38:16,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:16,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:16,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 08:38:16,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:16,735 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:16,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1324394752, now seen corresponding path program 1 times [2022-12-14 08:38:16,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:16,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513196451] [2022-12-14 08:38:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:16,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:16,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:16,737 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:16,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 (20)] Waiting until timeout for monitored process [2022-12-14 08:38:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:17,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:38:17,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:17,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:17,151 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:17,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513196451] [2022-12-14 08:38:17,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513196451] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:38:17,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252190259] [2022-12-14 08:38:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:17,151 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:38:17,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:38:17,153 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:38:17,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 08:38:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:17,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:38:17,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:17,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:17,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1252190259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:38:17,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437337461] [2022-12-14 08:38:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:38:17,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:38:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:38:17,604 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:38:17,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 08:38:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:38:17,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:38:17,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:17,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:17,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437337461] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:38:17,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:38:17,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 08:38:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104002033] [2022-12-14 08:38:17,862 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:38:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:38:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:38:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:38:17,869 INFO L87 Difference]: Start difference. First operand 1168 states and 1324 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:38:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:18,013 INFO L93 Difference]: Finished difference Result 1180 states and 1341 transitions. [2022-12-14 08:38:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:38:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-12-14 08:38:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:18,015 INFO L225 Difference]: With dead ends: 1180 [2022-12-14 08:38:18,015 INFO L226 Difference]: Without dead ends: 1180 [2022-12-14 08:38:18,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:38:18,016 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 12 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:18,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4034 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:38:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-12-14 08:38:18,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2022-12-14 08:38:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 747 states have (on average 1.783132530120482) internal successors, (1332), 1172 states have internal predecessors, (1332), 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 08:38:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1339 transitions. [2022-12-14 08:38:18,027 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1339 transitions. Word has length 74 [2022-12-14 08:38:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:18,027 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1339 transitions. [2022-12-14 08:38:18,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:38:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1339 transitions. [2022-12-14 08:38:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 08:38:18,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:18,028 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:18,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 (20)] Ended with exit code 0 [2022-12-14 08:38:18,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 08:38:18,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-12-14 08:38:18,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:38:18,630 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:18,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash -508582673, now seen corresponding path program 2 times [2022-12-14 08:38:18,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:18,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543744089] [2022-12-14 08:38:18,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:38:18,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:18,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:18,635 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:18,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 08:38:19,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:38:19,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:38:19,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:38:19,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:19,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:19,222 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:19,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543744089] [2022-12-14 08:38:19,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543744089] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:38:19,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1710155656] [2022-12-14 08:38:19,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:38:19,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:38:19,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:38:19,224 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:38:19,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-12-14 08:38:20,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:38:20,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:38:20,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:38:20,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:20,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:20,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1710155656] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:38:20,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701959660] [2022-12-14 08:38:20,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:38:20,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:38:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:38:20,668 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:38:20,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 08:38:35,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:38:35,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:38:35,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 08:38:35,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:35,474 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 08:38:35,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 08:38:35,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:38:35,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:38:35,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:38:35,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 08:38:35,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 08:38:35,722 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1650 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1650) |c_#memory_$Pointer$.offset|))) is different from true [2022-12-14 08:38:35,734 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652))) (exists ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1653) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 08:38:35,745 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 08:38:35,756 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 08:38:35,801 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 08:38:35,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-14 08:38:35,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 08:38:35,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-14 08:38:35,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 08:38:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-12-14 08:38:35,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:36,195 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-12-14 08:38:36,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701959660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:38:36,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 08:38:36,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 08:38:36,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479214529] [2022-12-14 08:38:36,201 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 08:38:36,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 08:38:36,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:38:36,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 08:38:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-12-14 08:38:36,202 INFO L87 Difference]: Start difference. First operand 1178 states and 1339 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 08:38:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:38:47,523 INFO L93 Difference]: Finished difference Result 1587 states and 1871 transitions. [2022-12-14 08:38:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 08:38:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-12-14 08:38:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:38:47,527 INFO L225 Difference]: With dead ends: 1587 [2022-12-14 08:38:47,527 INFO L226 Difference]: Without dead ends: 1581 [2022-12-14 08:38:47,529 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=1939, Unknown=12, NotChecked=490, Total=2862 [2022-12-14 08:38:47,529 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1838 mSDsluCounter, 6262 mSDsCounter, 0 mSdLazyCounter, 6531 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 12020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5449 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:38:47,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 6907 Invalid, 12020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 6531 Invalid, 0 Unknown, 5449 Unchecked, 10.3s Time] [2022-12-14 08:38:47,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-12-14 08:38:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1187. [2022-12-14 08:38:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 756 states have (on average 1.7764550264550265) internal successors, (1343), 1181 states have internal predecessors, (1343), 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 08:38:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1350 transitions. [2022-12-14 08:38:47,554 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1350 transitions. Word has length 77 [2022-12-14 08:38:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:38:47,555 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1350 transitions. [2022-12-14 08:38:47,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 08:38:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1350 transitions. [2022-12-14 08:38:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 08:38:47,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:38:47,556 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:38:47,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-14 08:38:47,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-14 08:38:47,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2022-12-14 08:38:48,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:38:48,158 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-12-14 08:38:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:38:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 201292623, now seen corresponding path program 3 times [2022-12-14 08:38:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:38:48,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776410366] [2022-12-14 08:38:48,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:38:48,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:38:48,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:38:48,164 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:38:48,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/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 (26)] Waiting until timeout for monitored process [2022-12-14 08:38:48,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 08:38:48,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:38:48,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 08:38:48,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:48,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:49,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:38:49,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776410366] [2022-12-14 08:38:49,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776410366] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:38:49,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458031917] [2022-12-14 08:38:49,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:38:49,557 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:38:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:38:49,558 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:38:49,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-12-14 08:38:53,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 08:38:53,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:38:53,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 08:38:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:38:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:53,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:38:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:38:54,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1458031917] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:38:54,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893573334] [2022-12-14 08:38:54,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:38:54,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:38:54,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:38:54,045 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:38:54,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9b85c1-cf1d-48ef-beb9-4236c92e8286/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process