./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- 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 15:41:38,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:41:38,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:41:38,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:41:38,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:41:38,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:41:38,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:41:38,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:41:38,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:41:38,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:41:38,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:41:38,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:41:38,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:41:38,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:41:38,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:41:38,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:41:38,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:41:38,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:41:38,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:41:38,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:41:38,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:41:38,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:41:38,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:41:38,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:41:38,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:41:38,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:41:38,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:41:38,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:41:38,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:41:38,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:41:38,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:41:38,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:41:38,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:41:38,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:41:38,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:41:38,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:41:38,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:41:38,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:41:38,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:41:38,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:41:38,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:41:38,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 15:41:38,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:41:38,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:41:38,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:41:38,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:41:38,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:41:38,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:41:38,070 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:41:38,070 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:41:38,070 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:41:38,070 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:41:38,070 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:41:38,070 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:41:38,071 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:41:38,071 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:41:38,071 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:41:38,071 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:41:38,071 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:41:38,071 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:41:38,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 15:41:38,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 15:41:38,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:41:38,072 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:41:38,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:41:38,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:41:38,073 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:41:38,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:41:38,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:41:38,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:41:38,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:41:38,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:41:38,074 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:41:38,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:41:38,075 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:41:38,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:41:38,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:41:38,075 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2022-12-14 15:41:38,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:41:38,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:41:38,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:41:38,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:41:38,317 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:41:38,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-12-14 15:41:40,971 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:41:41,263 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:41:41,263 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-12-14 15:41:41,278 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data/6b535bff0/46e3251256b14c408ab04ede8b20e2ec/FLAGbaae84750 [2022-12-14 15:41:41,292 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data/6b535bff0/46e3251256b14c408ab04ede8b20e2ec [2022-12-14 15:41:41,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:41:41,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:41:41,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:41:41,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:41:41,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:41:41,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:41" (1/1) ... [2022-12-14 15:41:41,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39236544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:41, skipping insertion in model container [2022-12-14 15:41:41,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:41" (1/1) ... [2022-12-14 15:41:41,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:41:41,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:41:41,809 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-12-14 15:41:41,991 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:41:41,993 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-12-14 15:41:42,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:41:42,013 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 15:41:42,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d5a3bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:42, skipping insertion in model container [2022-12-14 15:41:42,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:41:42,014 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 15:41:42,016 INFO L158 Benchmark]: Toolchain (without parser) took 718.74ms. Allocated memory is still 174.1MB. Free memory was 139.7MB in the beginning and 106.7MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 15:41:42,016 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 174.1MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:41:42,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 716.36ms. Allocated memory is still 174.1MB. Free memory was 139.7MB in the beginning and 106.7MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 15:41:42,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 174.1MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 716.36ms. Allocated memory is still 174.1MB. Free memory was 139.7MB in the beginning and 106.7MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- 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 15:41:43,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:41:43,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:41:43,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:41:43,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:41:43,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:41:43,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:41:43,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:41:43,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:41:43,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:41:43,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:41:43,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:41:43,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:41:43,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:41:43,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:41:43,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:41:43,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:41:43,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:41:43,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:41:43,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:41:43,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:41:43,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:41:43,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:41:43,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:41:43,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:41:43,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:41:43,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:41:43,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:41:43,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:41:43,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:41:43,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:41:43,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:41:43,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:41:43,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:41:43,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:41:43,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:41:43,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:41:43,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:41:43,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:41:43,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:41:43,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:41:43,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 15:41:43,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:41:43,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:41:43,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:41:43,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:41:43,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:41:43,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:41:43,587 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:41:43,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:41:43,587 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:41:43,587 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:41:43,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:41:43,588 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:41:43,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 15:41:43,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 15:41:43,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:41:43,588 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:41:43,588 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:41:43,589 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:41:43,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:41:43,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:41:43,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:41:43,591 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2022-12-14 15:41:43,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:41:43,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:41:43,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:41:43,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:41:43,819 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:41:43,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-12-14 15:41:46,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:41:46,803 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:41:46,803 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2022-12-14 15:41:46,820 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data/ed4b41e34/fa5e820e1e3c44ecaa7255811473e59b/FLAG32a9d7c98 [2022-12-14 15:41:46,834 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/data/ed4b41e34/fa5e820e1e3c44ecaa7255811473e59b [2022-12-14 15:41:46,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:41:46,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:41:46,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:41:46,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:41:46,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:41:46,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:46" (1/1) ... [2022-12-14 15:41:46,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193c5f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:46, skipping insertion in model container [2022-12-14 15:41:46,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:46" (1/1) ... [2022-12-14 15:41:46,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:41:46,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:41:47,205 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-12-14 15:41:47,363 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:41:47,365 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-12-14 15:41:47,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:41:47,385 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 15:41:47,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:41:47,414 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-12-14 15:41:47,513 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:41:47,515 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-12-14 15:41:47,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:41:47,529 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:41:47,546 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2022-12-14 15:41:47,591 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:41:47,592 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_40df5325-66bc-45c3-a316-f5f0f24c65dd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2022-12-14 15:41:47,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:41:47,618 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:41:47,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47 WrapperNode [2022-12-14 15:41:47,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:41:47,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:41:47,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:41:47,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:41:47,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,720 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3030 [2022-12-14 15:41:47,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:41:47,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:41:47,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:41:47,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:41:47,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,787 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:41:47,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:41:47,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:41:47,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:41:47,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (1/1) ... [2022-12-14 15:41:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:41:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:41:47,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:41:47,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:41:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 15:41:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 15:41:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 15:41:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:41:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:41:48,016 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:41:48,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:41:48,021 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 15:41:52,669 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:41:52,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:41:52,682 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-12-14 15:41:52,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:52 BoogieIcfgContainer [2022-12-14 15:41:52,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:41:52,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:41:52,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:41:52,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:41:52,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:41:46" (1/3) ... [2022-12-14 15:41:52,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c25ab36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:52, skipping insertion in model container [2022-12-14 15:41:52,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:47" (2/3) ... [2022-12-14 15:41:52,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c25ab36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:52, skipping insertion in model container [2022-12-14 15:41:52,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:52" (3/3) ... [2022-12-14 15:41:52,691 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-2.i [2022-12-14 15:41:52,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:41:52,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-12-14 15:41:52,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:41:52,761 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;@2eb80ac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:41:52,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-12-14 15:41:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 15:41:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 15:41:52,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:52,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 15:41:52,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:41:52,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:52,777 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 15:41:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:41:52,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100428936] [2022-12-14 15:41:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:52,786 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 15:41:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:41:52,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:52,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:52,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:41:52,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:41:52,931 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 15:41:52,941 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 15:41:52,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:41:52,941 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:41:52,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100428936] [2022-12-14 15:41:52,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100428936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:52,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:52,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:41:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693171391] [2022-12-14 15:41:52,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:41:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:41:52,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:41:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:41:52,973 INFO L87 Difference]: Start difference. First operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:55,334 INFO L93 Difference]: Finished difference Result 2234 states and 3299 transitions. [2022-12-14 15:41:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:41:55,336 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 15:41:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:55,356 INFO L225 Difference]: With dead ends: 2234 [2022-12-14 15:41:55,357 INFO L226 Difference]: Without dead ends: 2232 [2022-12-14 15:41:55,358 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 15:41:55,360 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 1983 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2486 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:55,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2486 Valid, 2783 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 15:41:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-12-14 15:41:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2054. [2022-12-14 15:41:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1031 states have (on average 2.0417070805043647) internal successors, (2105), 2048 states have internal predecessors, (2105), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 15:41:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3111 transitions. [2022-12-14 15:41:55,619 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3111 transitions. Word has length 3 [2022-12-14 15:41:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:55,619 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3111 transitions. [2022-12-14 15:41:55,619 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 15:41:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3111 transitions. [2022-12-14 15:41:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 15:41:55,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:55,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 15:41:55,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:55,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:55,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:41:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 15:41:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:41:55,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134890272] [2022-12-14 15:41:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:55,822 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 15:41:55,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:41:55,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:55,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:55,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:41:55,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:41:56,009 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 15:41:56,018 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 15:41:56,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:41:56,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:41:56,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134890272] [2022-12-14 15:41:56,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134890272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:56,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:56,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:41:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481716286] [2022-12-14 15:41:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:56,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:41:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:41:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:41:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:41:56,022 INFO L87 Difference]: Start difference. First operand 2054 states and 3111 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:59,252 INFO L93 Difference]: Finished difference Result 3462 states and 5551 transitions. [2022-12-14 15:41:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:41:59,253 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 15:41:59,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:59,266 INFO L225 Difference]: With dead ends: 3462 [2022-12-14 15:41:59,266 INFO L226 Difference]: Without dead ends: 3462 [2022-12-14 15:41:59,266 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 15:41:59,267 INFO L413 NwaCegarLoop]: 3415 mSDtfsCounter, 1440 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:59,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 5496 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 15:41:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-12-14 15:41:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3176. [2022-12-14 15:41:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 1654 states have (on average 2.0151148730350665) internal successors, (3333), 3170 states have internal predecessors, (3333), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:41:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5339 transitions. [2022-12-14 15:41:59,473 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5339 transitions. Word has length 3 [2022-12-14 15:41:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:59,473 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 5339 transitions. [2022-12-14 15:41:59,473 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 15:41:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5339 transitions. [2022-12-14 15:41:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 15:41:59,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:59,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:41:59,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:59,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:59,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:41:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 15:41:59,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:41:59,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682278660] [2022-12-14 15:41:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:41:59,676 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 15:41:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:41:59,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:59,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:41:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:41:59,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 15:41:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:41:59,780 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 15:41:59,794 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 15:41:59,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:41:59,844 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 15:41:59,859 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 15:41:59,860 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 15:41:59,879 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 15:41:59,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:41:59,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:41:59,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682278660] [2022-12-14 15:41:59,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682278660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:41:59,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:41:59,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:41:59,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940654634] [2022-12-14 15:41:59,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:41:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:41:59,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:41:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:41:59,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:41:59,882 INFO L87 Difference]: Start difference. First operand 3176 states and 5339 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:03,503 INFO L93 Difference]: Finished difference Result 3343 states and 5514 transitions. [2022-12-14 15:42:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:42:03,504 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 15:42:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:03,522 INFO L225 Difference]: With dead ends: 3343 [2022-12-14 15:42:03,522 INFO L226 Difference]: Without dead ends: 3343 [2022-12-14 15:42:03,523 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 15:42:03,524 INFO L413 NwaCegarLoop]: 2361 mSDtfsCounter, 2255 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:03,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 2451 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 15:42:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-12-14 15:42:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2043. [2022-12-14 15:42:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1031 states have (on average 2.0300678952473326) internal successors, (2093), 2037 states have internal predecessors, (2093), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 15:42:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3099 transitions. [2022-12-14 15:42:03,740 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3099 transitions. Word has length 7 [2022-12-14 15:42:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:03,740 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3099 transitions. [2022-12-14 15:42:03,741 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 15:42:03,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3099 transitions. [2022-12-14 15:42:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:42:03,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:03,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:42:03,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:03,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:03,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 15:42:03,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555689418] [2022-12-14 15:42:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:03,949 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 15:42:03,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:03,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:03,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:04,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:42:04,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:04,076 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 15:42:04,083 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 15:42:04,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:04,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:04,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555689418] [2022-12-14 15:42:04,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555689418] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:04,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:04,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:42:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735438980] [2022-12-14 15:42:04,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:04,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:42:04,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:42:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:42:04,085 INFO L87 Difference]: Start difference. First operand 2043 states and 3099 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:06,155 INFO L93 Difference]: Finished difference Result 3209 states and 5286 transitions. [2022-12-14 15:42:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:42:06,157 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 15:42:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:06,179 INFO L225 Difference]: With dead ends: 3209 [2022-12-14 15:42:06,179 INFO L226 Difference]: Without dead ends: 3209 [2022-12-14 15:42:06,179 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 15:42:06,180 INFO L413 NwaCegarLoop]: 4864 mSDtfsCounter, 1802 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:06,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7121 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 15:42:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-12-14 15:42:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 1996. [2022-12-14 15:42:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1031 states have (on average 1.9844810863239573) internal successors, (2046), 1990 states have internal predecessors, (2046), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 15:42:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3052 transitions. [2022-12-14 15:42:06,400 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3052 transitions. Word has length 8 [2022-12-14 15:42:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:06,400 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 3052 transitions. [2022-12-14 15:42:06,401 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 15:42:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3052 transitions. [2022-12-14 15:42:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:42:06,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:06,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:42:06,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-14 15:42:06,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:06,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:06,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 15:42:06,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:06,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285167928] [2022-12-14 15:42:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:06,603 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 15:42:06,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:06,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:06,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:06,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:42:06,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:06,689 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 15:42:06,710 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 15:42:06,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:06,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:06,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285167928] [2022-12-14 15:42:06,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285167928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:06,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:06,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:42:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592039083] [2022-12-14 15:42:06,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:06,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:42:06,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:42:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:42:06,712 INFO L87 Difference]: Start difference. First operand 1996 states and 3052 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:09,792 INFO L93 Difference]: Finished difference Result 3274 states and 5354 transitions. [2022-12-14 15:42:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:42:09,792 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 15:42:09,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:09,799 INFO L225 Difference]: With dead ends: 3274 [2022-12-14 15:42:09,800 INFO L226 Difference]: Without dead ends: 3274 [2022-12-14 15:42:09,800 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 15:42:09,800 INFO L413 NwaCegarLoop]: 5056 mSDtfsCounter, 1489 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:09,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 7477 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 15:42:09,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-12-14 15:42:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2018. [2022-12-14 15:42:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1063 states have (on average 1.9774223894637817) internal successors, (2102), 2012 states have internal predecessors, (2102), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 15:42:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3108 transitions. [2022-12-14 15:42:10,066 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3108 transitions. Word has length 8 [2022-12-14 15:42:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:10,066 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3108 transitions. [2022-12-14 15:42:10,066 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 15:42:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3108 transitions. [2022-12-14 15:42:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:42:10,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:10,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:42:10,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:10,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:10,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr430REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:10,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash 696609462, now seen corresponding path program 1 times [2022-12-14 15:42:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:10,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959678988] [2022-12-14 15:42:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:10,269 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 15:42:10,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:10,270 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:10,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:10,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:42:10,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:10,386 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 15:42:10,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:10,386 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:10,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959678988] [2022-12-14 15:42:10,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959678988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:10,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:10,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:42:10,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129409264] [2022-12-14 15:42:10,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:10,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:42:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:42:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:42:10,387 INFO L87 Difference]: Start difference. First operand 2018 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:10,651 INFO L93 Difference]: Finished difference Result 3485 states and 5610 transitions. [2022-12-14 15:42:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:42:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 15:42:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:10,659 INFO L225 Difference]: With dead ends: 3485 [2022-12-14 15:42:10,659 INFO L226 Difference]: Without dead ends: 3485 [2022-12-14 15:42:10,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:42:10,659 INFO L413 NwaCegarLoop]: 3604 mSDtfsCounter, 1560 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6489 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:10,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 6489 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:42:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2022-12-14 15:42:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3192. [2022-12-14 15:42:10,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 1737 states have (on average 1.9568221070811744) internal successors, (3399), 3186 states have internal predecessors, (3399), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 5405 transitions. [2022-12-14 15:42:10,889 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 5405 transitions. Word has length 11 [2022-12-14 15:42:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:10,889 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 5405 transitions. [2022-12-14 15:42:10,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 5405 transitions. [2022-12-14 15:42:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 15:42:10,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:10,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:42:10,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:11,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:11,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-12-14 15:42:11,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:11,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614652003] [2022-12-14 15:42:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:11,092 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 15:42:11,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:11,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:11,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:11,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 15:42:11,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:11,209 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 15:42:11,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:11,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:11,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614652003] [2022-12-14 15:42:11,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614652003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:11,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:11,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:42:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507911701] [2022-12-14 15:42:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:42:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:11,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:42:11,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:42:11,211 INFO L87 Difference]: Start difference. First operand 3192 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:11,261 INFO L93 Difference]: Finished difference Result 3346 states and 5545 transitions. [2022-12-14 15:42:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:42:11,262 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 15:42:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:11,276 INFO L225 Difference]: With dead ends: 3346 [2022-12-14 15:42:11,276 INFO L226 Difference]: Without dead ends: 3346 [2022-12-14 15:42:11,276 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 15:42:11,277 INFO L413 NwaCegarLoop]: 3200 mSDtfsCounter, 1394 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4515 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:11,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4515 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:42:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2022-12-14 15:42:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 3132. [2022-12-14 15:42:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 1701 states have (on average 1.9476778365667256) internal successors, (3313), 3126 states have internal predecessors, (3313), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5319 transitions. [2022-12-14 15:42:11,568 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5319 transitions. Word has length 13 [2022-12-14 15:42:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:11,569 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 5319 transitions. [2022-12-14 15:42:11,569 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 15:42:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5319 transitions. [2022-12-14 15:42:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 15:42:11,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:11,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:42:11,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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)] Forceful destruction successful, exit code 0 [2022-12-14 15:42:11,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:11,771 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -579444504, now seen corresponding path program 1 times [2022-12-14 15:42:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073899339] [2022-12-14 15:42:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:11,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:42:11,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:11,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:11,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:11,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:42:11,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:11,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:42:11,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:42:11,949 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 15:42:11,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 15:42:11,993 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 15:42:12,015 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 15:42:12,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:12,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:12,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073899339] [2022-12-14 15:42:12,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073899339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:12,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:12,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:42:12,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238804301] [2022-12-14 15:42:12,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:12,017 INFO L87 Difference]: Start difference. First operand 3132 states and 5319 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:14,990 INFO L93 Difference]: Finished difference Result 5449 states and 9667 transitions. [2022-12-14 15:42:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:42:14,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 15:42:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:15,003 INFO L225 Difference]: With dead ends: 5449 [2022-12-14 15:42:15,003 INFO L226 Difference]: Without dead ends: 5449 [2022-12-14 15:42:15,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:42:15,004 INFO L413 NwaCegarLoop]: 3457 mSDtfsCounter, 1333 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 9264 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:15,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 9264 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 15:42:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-12-14 15:42:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 3131. [2022-12-14 15:42:15,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 1700 states have (on average 1.9476470588235295) internal successors, (3311), 3125 states have internal predecessors, (3311), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5317 transitions. [2022-12-14 15:42:15,405 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5317 transitions. Word has length 14 [2022-12-14 15:42:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:15,405 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5317 transitions. [2022-12-14 15:42:15,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5317 transitions. [2022-12-14 15:42:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 15:42:15,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:15,406 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 15:42:15,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:15,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:15,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 15:42:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:15,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145157103] [2022-12-14 15:42:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:15,611 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 15:42:15,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:15,614 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:15,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:15,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 15:42:15,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:15,856 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 15:42:15,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:15,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:15,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145157103] [2022-12-14 15:42:15,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145157103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:15,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:15,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:42:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048959583] [2022-12-14 15:42:15,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:15,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:42:15,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:42:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:42:15,858 INFO L87 Difference]: Start difference. First operand 3131 states and 5317 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:15,890 INFO L93 Difference]: Finished difference Result 3071 states and 5231 transitions. [2022-12-14 15:42:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:42:15,891 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 15:42:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:15,896 INFO L225 Difference]: With dead ends: 3071 [2022-12-14 15:42:15,896 INFO L226 Difference]: Without dead ends: 3071 [2022-12-14 15:42:15,896 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 15:42:15,897 INFO L413 NwaCegarLoop]: 2952 mSDtfsCounter, 1931 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:15,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 3479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:42:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2022-12-14 15:42:16,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3071. [2022-12-14 15:42:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1664 states have (on average 1.9381009615384615) internal successors, (3225), 3065 states have internal predecessors, (3225), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5231 transitions. [2022-12-14 15:42:16,077 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5231 transitions. Word has length 18 [2022-12-14 15:42:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:16,077 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 5231 transitions. [2022-12-14 15:42:16,077 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 15:42:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5231 transitions. [2022-12-14 15:42:16,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 15:42:16,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:16,077 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 15:42:16,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:16,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 15:42:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330199793] [2022-12-14 15:42:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:16,280 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 15:42:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:16,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:16,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:16,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:42:16,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:16,420 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 15:42:16,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:16,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:16,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330199793] [2022-12-14 15:42:16,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330199793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:16,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:16,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:42:16,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112316196] [2022-12-14 15:42:16,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:16,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:16,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:16,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:16,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:16,422 INFO L87 Difference]: Start difference. First operand 3071 states and 5231 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:16,492 INFO L93 Difference]: Finished difference Result 3043 states and 5175 transitions. [2022-12-14 15:42:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:42:16,493 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 15:42:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:16,500 INFO L225 Difference]: With dead ends: 3043 [2022-12-14 15:42:16,500 INFO L226 Difference]: Without dead ends: 3043 [2022-12-14 15:42:16,501 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 15:42:16,501 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1912 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:16,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 6334 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:42:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-12-14 15:42:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3041. [2022-12-14 15:42:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 1648 states have (on average 1.9217233009708738) internal successors, (3167), 3035 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 5173 transitions. [2022-12-14 15:42:16,714 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 5173 transitions. Word has length 20 [2022-12-14 15:42:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:16,714 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 5173 transitions. [2022-12-14 15:42:16,714 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 15:42:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 5173 transitions. [2022-12-14 15:42:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 15:42:16,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:16,715 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 15:42:16,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:16,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 15:42:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:16,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285644710] [2022-12-14 15:42:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:16,917 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 15:42:16,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:16,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:16,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:17,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:42:17,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:17,049 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 15:42:17,120 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 15:42:17,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:17,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:17,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285644710] [2022-12-14 15:42:17,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285644710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:17,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:17,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:42:17,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637216124] [2022-12-14 15:42:17,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:17,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:17,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:17,122 INFO L87 Difference]: Start difference. First operand 3041 states and 5173 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:20,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:20,456 INFO L93 Difference]: Finished difference Result 5472 states and 9669 transitions. [2022-12-14 15:42:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:42:20,457 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 15:42:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:20,467 INFO L225 Difference]: With dead ends: 5472 [2022-12-14 15:42:20,467 INFO L226 Difference]: Without dead ends: 5472 [2022-12-14 15:42:20,467 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 15:42:20,467 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 3438 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:20,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 6500 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-14 15:42:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-12-14 15:42:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 3037. [2022-12-14 15:42:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 1648 states have (on average 1.916868932038835) internal successors, (3159), 3031 states have internal predecessors, (3159), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 5165 transitions. [2022-12-14 15:42:20,810 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 5165 transitions. Word has length 34 [2022-12-14 15:42:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:20,811 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 5165 transitions. [2022-12-14 15:42:20,811 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 15:42:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 5165 transitions. [2022-12-14 15:42:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 15:42:20,811 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:20,811 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 15:42:20,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:21,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:21,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 15:42:21,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:21,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64453765] [2022-12-14 15:42:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:21,014 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 15:42:21,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:21,015 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:21,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:21,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:42:21,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:21,178 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 15:42:21,303 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 15:42:21,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:21,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:21,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64453765] [2022-12-14 15:42:21,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64453765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:21,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:21,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:42:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599223436] [2022-12-14 15:42:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:21,305 INFO L87 Difference]: Start difference. First operand 3037 states and 5165 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:25,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:25,892 INFO L93 Difference]: Finished difference Result 5529 states and 9691 transitions. [2022-12-14 15:42:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:42:25,892 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 15:42:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:25,900 INFO L225 Difference]: With dead ends: 5529 [2022-12-14 15:42:25,900 INFO L226 Difference]: Without dead ends: 5529 [2022-12-14 15:42:25,901 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 15:42:25,901 INFO L413 NwaCegarLoop]: 5150 mSDtfsCounter, 2908 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 10076 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:25,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 10076 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 15:42:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-12-14 15:42:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 3033. [2022-12-14 15:42:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 1648 states have (on average 1.9120145631067962) internal successors, (3151), 3027 states have internal predecessors, (3151), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5157 transitions. [2022-12-14 15:42:26,262 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5157 transitions. Word has length 34 [2022-12-14 15:42:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:26,262 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 5157 transitions. [2022-12-14 15:42:26,262 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 15:42:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5157 transitions. [2022-12-14 15:42:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 15:42:26,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:26,263 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 15:42:26,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:26,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:26,463 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 15:42:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:26,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059291815] [2022-12-14 15:42:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:26,465 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 15:42:26,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:26,466 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:26,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:26,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:42:26,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:26,691 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 15:42:26,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:26,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059291815] [2022-12-14 15:42:26,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059291815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:26,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:26,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:42:26,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887829914] [2022-12-14 15:42:26,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:26,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:26,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:26,694 INFO L87 Difference]: Start difference. First operand 3033 states and 5157 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:26,747 INFO L93 Difference]: Finished difference Result 3021 states and 5137 transitions. [2022-12-14 15:42:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:42:26,747 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 15:42:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:26,754 INFO L225 Difference]: With dead ends: 3021 [2022-12-14 15:42:26,754 INFO L226 Difference]: Without dead ends: 3021 [2022-12-14 15:42:26,754 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 15:42:26,755 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1881 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6312 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:26,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 6312 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:42:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-12-14 15:42:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3021. [2022-12-14 15:42:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 1636 states have (on average 1.9138141809290954) internal successors, (3131), 3015 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 5137 transitions. [2022-12-14 15:42:26,947 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 5137 transitions. Word has length 52 [2022-12-14 15:42:26,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:26,947 INFO L495 AbstractCegarLoop]: Abstraction has 3021 states and 5137 transitions. [2022-12-14 15:42:26,947 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 15:42:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 5137 transitions. [2022-12-14 15:42:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 15:42:26,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:26,948 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 15:42:26,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:27,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:27,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 15:42:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453320531] [2022-12-14 15:42:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:27,154 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 15:42:27,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:27,157 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:27,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:27,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 15:42:27,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:27,546 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 15:42:27,550 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 15:42:27,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:42:27,903 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 15:42:27,913 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 15:42:27,913 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 15:42:27,928 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 15:42:27,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:27,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:27,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453320531] [2022-12-14 15:42:27,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453320531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:27,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:27,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:42:27,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315467204] [2022-12-14 15:42:27,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:27,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:27,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:27,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:27,929 INFO L87 Difference]: Start difference. First operand 3021 states and 5137 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:32,144 INFO L93 Difference]: Finished difference Result 5223 states and 9398 transitions. [2022-12-14 15:42:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:42:32,145 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 15:42:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:32,153 INFO L225 Difference]: With dead ends: 5223 [2022-12-14 15:42:32,153 INFO L226 Difference]: Without dead ends: 5223 [2022-12-14 15:42:32,153 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 15:42:32,153 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2770 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3773 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:32,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3773 Valid, 4221 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 15:42:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2022-12-14 15:42:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 2951. [2022-12-14 15:42:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1604 states have (on average 1.8871571072319202) internal successors, (3027), 2945 states have internal predecessors, (3027), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 5033 transitions. [2022-12-14 15:42:32,488 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 5033 transitions. Word has length 60 [2022-12-14 15:42:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:32,488 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 5033 transitions. [2022-12-14 15:42:32,488 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 15:42:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 5033 transitions. [2022-12-14 15:42:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 15:42:32,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:32,489 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 15:42:32,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 15:42:32,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:32,690 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:32,695 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 15:42:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:32,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668405163] [2022-12-14 15:42:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:32,699 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 15:42:32,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:32,702 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:32,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:33,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:42:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:33,048 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 15:42:33,057 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 15:42:33,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-14 15:42:33,086 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 15:42:33,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:33,086 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:33,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668405163] [2022-12-14 15:42:33,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668405163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:33,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:33,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:42:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36882327] [2022-12-14 15:42:33,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:33,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:42:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:42:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:42:33,088 INFO L87 Difference]: Start difference. First operand 2951 states and 5033 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:35,188 INFO L93 Difference]: Finished difference Result 2950 states and 5032 transitions. [2022-12-14 15:42:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 15:42:35,189 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 15:42:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:35,194 INFO L225 Difference]: With dead ends: 2950 [2022-12-14 15:42:35,194 INFO L226 Difference]: Without dead ends: 2950 [2022-12-14 15:42:35,194 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 15:42:35,194 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 4 mSDsluCounter, 7345 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10206 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:35,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10206 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 15:42:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-12-14 15:42:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2022-12-14 15:42:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1604 states have (on average 1.8865336658354115) internal successors, (3026), 2944 states have internal predecessors, (3026), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5032 transitions. [2022-12-14 15:42:35,378 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5032 transitions. Word has length 65 [2022-12-14 15:42:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:35,378 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 5032 transitions. [2022-12-14 15:42:35,378 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 15:42:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5032 transitions. [2022-12-14 15:42:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 15:42:35,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:35,379 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 15:42:35,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:35,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:35,580 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 15:42:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:35,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948717273] [2022-12-14 15:42:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:35,586 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 15:42:35,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:35,589 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:35,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:35,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 15:42:35,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:35,941 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 15:42:35,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 15:42:35,962 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 15:42:35,999 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 15:42:36,004 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 15:42:36,016 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 15:42:36,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:36,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:36,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948717273] [2022-12-14 15:42:36,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948717273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:36,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:36,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:42:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259575009] [2022-12-14 15:42:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:36,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:42:36,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:42:36,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:42:36,017 INFO L87 Difference]: Start difference. First operand 2950 states and 5032 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:42:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:39,006 INFO L93 Difference]: Finished difference Result 2949 states and 5031 transitions. [2022-12-14 15:42:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 15:42:39,007 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 15:42:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:39,013 INFO L225 Difference]: With dead ends: 2949 [2022-12-14 15:42:39,013 INFO L226 Difference]: Without dead ends: 2949 [2022-12-14 15:42:39,013 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 15:42:39,014 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:39,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10242 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 15:42:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-12-14 15:42:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-12-14 15:42:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 1603 states have (on average 1.8870867124142234) internal successors, (3025), 2943 states have internal predecessors, (3025), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 15:42:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 5031 transitions. [2022-12-14 15:42:39,191 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 5031 transitions. Word has length 65 [2022-12-14 15:42:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:39,191 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 5031 transitions. [2022-12-14 15:42:39,191 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 15:42:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 5031 transitions. [2022-12-14 15:42:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 15:42:39,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:39,192 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 15:42:39,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:39,393 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:39,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash -517931281, now seen corresponding path program 1 times [2022-12-14 15:42:39,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:39,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214711127] [2022-12-14 15:42:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:39,397 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 15:42:39,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:39,399 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:39,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:39,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:42:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:39,651 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 15:42:39,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:42:39,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:39,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214711127] [2022-12-14 15:42:39,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214711127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:42:39,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:42:39,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:42:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662343727] [2022-12-14 15:42:39,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:42:39,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:42:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:42:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:42:39,652 INFO L87 Difference]: Start difference. First operand 2949 states and 5031 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 15:42:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:39,710 INFO L93 Difference]: Finished difference Result 2952 states and 5035 transitions. [2022-12-14 15:42:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:42:39,710 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 15:42:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:39,718 INFO L225 Difference]: With dead ends: 2952 [2022-12-14 15:42:39,718 INFO L226 Difference]: Without dead ends: 2952 [2022-12-14 15:42:39,718 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 15:42:39,718 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8578 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:39,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8578 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:42:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-12-14 15:42:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2022-12-14 15:42:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 1605 states have (on average 1.8866043613707164) internal successors, (3028), 2946 states have internal predecessors, (3028), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 15:42:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5035 transitions. [2022-12-14 15:42:39,921 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5035 transitions. Word has length 73 [2022-12-14 15:42:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:39,921 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 5035 transitions. [2022-12-14 15:42:39,922 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 15:42:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5035 transitions. [2022-12-14 15:42:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 15:42:39,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:39,922 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 15:42:39,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:40,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:40,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash -563037036, now seen corresponding path program 1 times [2022-12-14 15:42:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:40,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351913393] [2022-12-14 15:42:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:40,124 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 15:42:40,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:40,125 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:40,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:40,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:42:40,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:40,366 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 15:42:40,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:42:40,432 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 15:42:40,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:40,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351913393] [2022-12-14 15:42:40,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351913393] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:42:40,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [932210819] [2022-12-14 15:42:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:40,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:42:40,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:42:40,434 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:42:40,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 15:42:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:40,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:42:40,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:40,896 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 15:42:40,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:42:40,929 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 15:42:40,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [932210819] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:42:40,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299261870] [2022-12-14 15:42:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:42:40,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:42:40,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:42:40,931 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:42:40,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 15:42:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:42:41,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:42:41,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:41,118 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 15:42:41,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:42:41,149 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 15:42:41,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299261870] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:42:41,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:42:41,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 15:42:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565985184] [2022-12-14 15:42:41,150 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:42:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 15:42:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:42:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 15:42:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 15:42:41,151 INFO L87 Difference]: Start difference. First operand 2952 states and 5035 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 15:42:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:42:41,346 INFO L93 Difference]: Finished difference Result 2964 states and 5052 transitions. [2022-12-14 15:42:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 15:42:41,347 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 15:42:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:42:41,354 INFO L225 Difference]: With dead ends: 2964 [2022-12-14 15:42:41,355 INFO L226 Difference]: Without dead ends: 2964 [2022-12-14 15:42:41,355 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 15:42:41,355 INFO L413 NwaCegarLoop]: 2862 mSDtfsCounter, 9 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:42:41,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11436 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:42:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-12-14 15:42:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2962. [2022-12-14 15:42:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 1614 states have (on average 1.885377942998761) internal successors, (3043), 2955 states have internal predecessors, (3043), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 15:42:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 5050 transitions. [2022-12-14 15:42:41,612 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 5050 transitions. Word has length 74 [2022-12-14 15:42:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:42:41,612 INFO L495 AbstractCegarLoop]: Abstraction has 2962 states and 5050 transitions. [2022-12-14 15:42:41,612 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 15:42:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 5050 transitions. [2022-12-14 15:42:41,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 15:42:41,613 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:42:41,613 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 15:42:41,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 15:42:41,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-12-14 15:42:42,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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)] Forceful destruction successful, exit code 0 [2022-12-14 15:42:42,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:42,215 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:42:42,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:42:42,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1779056593, now seen corresponding path program 2 times [2022-12-14 15:42:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:42:42,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705862787] [2022-12-14 15:42:42,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:42:42,220 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 15:42:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:42:42,223 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:42:42,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-14 15:42:42,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:42:42,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:42:42,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:42:42,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:42,663 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 15:42:42,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:42:42,801 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 15:42:42,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:42:42,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705862787] [2022-12-14 15:42:42,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705862787] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:42:42,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1416113534] [2022-12-14 15:42:42,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:42:42,802 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:42:42,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:42:42,803 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:42:42,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-14 15:42:44,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:42:44,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:42:44,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:42:44,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:44,106 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 15:42:44,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:42:44,167 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 15:42:44,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1416113534] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:42:44,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326694140] [2022-12-14 15:42:44,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:42:44,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:42:44,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:42:44,168 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:42:44,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 15:43:15,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:43:15,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:43:15,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 15:43:15,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:43:15,150 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 15:43:15,161 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 15:43:15,161 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 15:43:15,204 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 15:43:15,214 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 15:43:15,370 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 15:43:15,375 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 15:43:15,451 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1619 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1619))) (exists ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1618))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 15:43:15,462 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1621))) (exists ((v_ArrVal_1620 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1620))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 15:43:15,474 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1623))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 15:43:15,485 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1625 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1625) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1624) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 15:43:15,526 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 15:43:15,527 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 15:43:15,535 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 15:43:15,605 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 15:43:15,609 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 15:43:15,649 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 15:43:15,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:43:15,930 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2022-12-14 15:43:15,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326694140] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:43:15,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 15:43:15,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 15:43:15,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885440942] [2022-12-14 15:43:15,936 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 15:43:15,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 15:43:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:43:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 15:43:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-12-14 15:43:15,937 INFO L87 Difference]: Start difference. First operand 2962 states and 5050 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 15:43:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:43:33,495 INFO L93 Difference]: Finished difference Result 5225 states and 9378 transitions. [2022-12-14 15:43:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 15:43:33,496 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 15:43:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:43:33,504 INFO L225 Difference]: With dead ends: 5225 [2022-12-14 15:43:33,505 INFO L226 Difference]: Without dead ends: 5219 [2022-12-14 15:43:33,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=421, Invalid=1941, Unknown=10, NotChecked=490, Total=2862 [2022-12-14 15:43:33,505 INFO L413 NwaCegarLoop]: 3063 mSDtfsCounter, 4429 mSDsluCounter, 27949 mSDsCounter, 0 mSdLazyCounter, 9541 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 31012 SdHoareTripleChecker+Invalid, 30976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 9541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20388 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:43:33,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4929 Valid, 31012 Invalid, 30976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1047 Valid, 9541 Invalid, 0 Unknown, 20388 Unchecked, 16.2s Time] [2022-12-14 15:43:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2022-12-14 15:43:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 2971. [2022-12-14 15:43:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 1623 states have (on average 1.8817005545286507) internal successors, (3054), 2964 states have internal predecessors, (3054), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 15:43:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 5061 transitions. [2022-12-14 15:43:33,969 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 5061 transitions. Word has length 77 [2022-12-14 15:43:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:43:33,969 INFO L495 AbstractCegarLoop]: Abstraction has 2971 states and 5061 transitions. [2022-12-14 15:43:33,969 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 15:43:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 5061 transitions. [2022-12-14 15:43:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 15:43:33,970 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:43:33,970 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 15:43:33,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-12-14 15:43:34,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 15:43:34,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-14 15:43:34,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:43:34,572 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 15:43:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:43:34,578 INFO L85 PathProgramCache]: Analyzing trace with hash -271518193, now seen corresponding path program 3 times [2022-12-14 15:43:34,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:43:34,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236250768] [2022-12-14 15:43:34,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:43:34,580 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 15:43:34,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:43:34,583 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/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 15:43:34,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-14 15:43:35,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 15:43:35,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:43:35,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 15:43:35,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:43:35,431 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 15:43:35,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:43:36,046 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 15:43:36,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:43:36,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236250768] [2022-12-14 15:43:36,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236250768] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:43:36,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [714378305] [2022-12-14 15:43:36,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:43:36,047 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:43:36,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:43:36,048 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:43:36,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-12-14 15:43:40,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 15:43:40,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:43:40,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 15:43:40,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:43:40,608 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 15:43:40,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:43:40,772 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 15:43:40,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [714378305] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:43:40,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837088545] [2022-12-14 15:43:40,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:43:40,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:43:40,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:43:40,774 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:43:40,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40df5325-66bc-45c3-a316-f5f0f24c65dd/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process