./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- 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 10:47:16,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:47:16,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:47:16,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:47:16,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:47:16,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:47:16,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:47:16,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:47:16,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:47:16,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:47:16,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:47:16,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:47:16,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:47:16,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:47:16,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:47:16,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:47:16,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:47:16,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:47:16,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:47:16,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:47:16,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:47:16,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:47:16,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:47:16,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:47:16,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:47:16,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:47:16,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:47:16,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:47:16,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:47:16,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:47:16,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:47:16,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:47:16,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:47:16,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:47:16,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:47:16,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:47:16,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:47:16,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:47:16,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:47:16,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:47:16,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:47:16,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:47:16,477 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:47:16,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:47:16,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:47:16,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:47:16,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:47:16,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:47:16,484 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:47:16,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:47:16,484 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:47:16,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:47:16,484 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:47:16,485 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:47:16,485 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:47:16,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:47:16,485 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:47:16,485 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:47:16,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:47:16,486 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:47:16,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:47:16,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:47:16,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:47:16,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:47:16,487 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:47:16,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:47:16,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:47:16,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:47:16,488 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:47:16,488 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:47:16,488 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:47:16,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:47:16,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:47:16,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:47:16,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:47:16,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:47:16,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:47:16,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:47:16,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:47:16,490 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:47:16,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:47:16,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:47:16,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:47:16,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:47:16,491 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2022-12-14 10:47:16,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:47:16,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:47:16,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:47:16,680 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:47:16,681 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:47:16,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-12-14 10:47:19,231 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:47:19,406 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:47:19,407 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-12-14 10:47:19,416 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data/d752eee92/55c7d34c906d4e3ea8a0faf793beece4/FLAGafef183e7 [2022-12-14 10:47:19,426 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data/d752eee92/55c7d34c906d4e3ea8a0faf793beece4 [2022-12-14 10:47:19,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:47:19,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:47:19,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:47:19,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:47:19,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:47:19,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:47:19" (1/1) ... [2022-12-14 10:47:19,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a336d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:19, skipping insertion in model container [2022-12-14 10:47:19,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:47:19" (1/1) ... [2022-12-14 10:47:19,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:47:19,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:47:19,711 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-12-14 10:47:19,768 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:47:19,775 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-12-14 10:47:19,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:47:19,789 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 10:47:19,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7efdf4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:19, skipping insertion in model container [2022-12-14 10:47:19,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:47:19,789 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 10:47:19,791 INFO L158 Benchmark]: Toolchain (without parser) took 360.79ms. Allocated memory is still 138.4MB. Free memory was 94.7MB in the beginning and 75.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 10:47:19,791 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:47:19,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.15ms. Allocated memory is still 138.4MB. Free memory was 94.7MB in the beginning and 75.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 10:47:19,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.15ms. Allocated memory is still 138.4MB. Free memory was 94.7MB in the beginning and 75.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- 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 10:47:21,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:47:21,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:47:21,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:47:21,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:47:21,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:47:21,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:47:21,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:47:21,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:47:21,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:47:21,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:47:21,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:47:21,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:47:21,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:47:21,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:47:21,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:47:21,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:47:21,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:47:21,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:47:21,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:47:21,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:47:21,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:47:21,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:47:21,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:47:21,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:47:21,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:47:21,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:47:21,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:47:21,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:47:21,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:47:21,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:47:21,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:47:21,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:47:21,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:47:21,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:47:21,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:47:21,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:47:21,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:47:21,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:47:21,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:47:21,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:47:21,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 10:47:21,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:47:21,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:47:21,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:47:21,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:47:21,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:47:21,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:47:21,411 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:47:21,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:47:21,411 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:47:21,411 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:47:21,411 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:47:21,411 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:47:21,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:47:21,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:47:21,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:47:21,413 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:47:21,413 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:47:21,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:47:21,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:47:21,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:47:21,414 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:47:21,414 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:47:21,414 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:47:21,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:47:21,414 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:47:21,414 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:47:21,414 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:47:21,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:47:21,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:47:21,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:47:21,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:47:21,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:47:21,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:47:21,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:47:21,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:47:21,416 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:47:21,416 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:47:21,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:47:21,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:47:21,417 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2022-12-14 10:47:21,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:47:21,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:47:21,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:47:21,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:47:21,665 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:47:21,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-12-14 10:47:24,271 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:47:24,511 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:47:24,511 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2022-12-14 10:47:24,521 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data/42576451a/b627c3ef2b824d07bd2103f7d89010d4/FLAGacfb15f3f [2022-12-14 10:47:24,535 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/data/42576451a/b627c3ef2b824d07bd2103f7d89010d4 [2022-12-14 10:47:24,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:47:24,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:47:24,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:47:24,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:47:24,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:47:24,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:47:24" (1/1) ... [2022-12-14 10:47:24,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0336a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:24, skipping insertion in model container [2022-12-14 10:47:24,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:47:24" (1/1) ... [2022-12-14 10:47:24,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:47:24,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:47:24,869 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-12-14 10:47:24,935 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:47:24,944 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-12-14 10:47:24,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:47:24,958 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 10:47:24,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:47:24,987 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-12-14 10:47:25,021 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:47:25,027 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-12-14 10:47:25,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:47:25,032 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:47:25,049 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2022-12-14 10:47:25,084 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:47:25,090 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_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2022-12-14 10:47:25,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:47:25,116 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:47:25,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25 WrapperNode [2022-12-14 10:47:25,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:47:25,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:47:25,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:47:25,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:47:25,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,195 INFO L138 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1037 [2022-12-14 10:47:25,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:47:25,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:47:25,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:47:25,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:47:25,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:47:25,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:47:25,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:47:25,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:47:25,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (1/1) ... [2022-12-14 10:47:25,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:47:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:47:25,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:47:25,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:47:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 10:47:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 10:47:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:47:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:47:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 10:47:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 10:47:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:47:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:47:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:47:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:47:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 10:47:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:47:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:47:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:47:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:47:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:47:25,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:47:25,517 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:47:25,519 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:47:25,522 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 10:47:29,161 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:47:29,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:47:29,174 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-12-14 10:47:29,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:47:29 BoogieIcfgContainer [2022-12-14 10:47:29,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:47:29,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:47:29,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:47:29,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:47:29,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:47:24" (1/3) ... [2022-12-14 10:47:29,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc36922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:47:29, skipping insertion in model container [2022-12-14 10:47:29,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:47:25" (2/3) ... [2022-12-14 10:47:29,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc36922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:47:29, skipping insertion in model container [2022-12-14 10:47:29,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:47:29" (3/3) ... [2022-12-14 10:47:29,185 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-1.i [2022-12-14 10:47:29,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:47:29,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2022-12-14 10:47:29,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:47:29,281 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;@29925cff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:47:29,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2022-12-14 10:47:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 1071 states, 529 states have (on average 2.2457466918714557) internal successors, (1188), 1065 states have internal predecessors, (1188), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:47:29,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:29,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:47:29,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 10:47:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:29,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514993755] [2022-12-14 10:47:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:29,313 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 10:47:29,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:29,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:29,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:47:29,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:29,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:47:29,486 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 10:47:29,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:29,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514993755] [2022-12-14 10:47:29,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514993755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:29,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:29,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:47:29,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964308785] [2022-12-14 10:47:29,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:47:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:29,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:47:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:47:29,529 INFO L87 Difference]: Start difference. First operand has 1071 states, 529 states have (on average 2.2457466918714557) internal successors, (1188), 1065 states have internal predecessors, (1188), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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 10:47:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:31,080 INFO L93 Difference]: Finished difference Result 1066 states and 1130 transitions. [2022-12-14 10:47:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:47:31,083 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 10:47:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:31,098 INFO L225 Difference]: With dead ends: 1066 [2022-12-14 10:47:31,099 INFO L226 Difference]: Without dead ends: 1064 [2022-12-14 10:47:31,100 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 10:47:31,103 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 988 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:31,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 703 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:47:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-12-14 10:47:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1056. [2022-12-14 10:47:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 529 states have (on average 2.0888468809073726) internal successors, (1105), 1050 states have internal predecessors, (1105), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1121 transitions. [2022-12-14 10:47:31,170 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1121 transitions. Word has length 3 [2022-12-14 10:47:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:31,170 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1121 transitions. [2022-12-14 10:47:31,171 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 10:47:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1121 transitions. [2022-12-14 10:47:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:47:31,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:31,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:47:31,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:31,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 10:47:31,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:31,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124287086] [2022-12-14 10:47:31,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:31,380 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 10:47:31,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:31,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:31,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:31,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:47:31,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:31,496 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 10:47:31,507 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 10:47:31,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:31,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:31,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124287086] [2022-12-14 10:47:31,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124287086] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:31,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:31,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:47:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959699662] [2022-12-14 10:47:31,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:31,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:47:31,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:47:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:47:31,510 INFO L87 Difference]: Start difference. First operand 1056 states and 1121 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 10:47:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:33,926 INFO L93 Difference]: Finished difference Result 1466 states and 1571 transitions. [2022-12-14 10:47:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:47:33,927 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 10:47:33,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:33,929 INFO L225 Difference]: With dead ends: 1466 [2022-12-14 10:47:33,929 INFO L226 Difference]: Without dead ends: 1466 [2022-12-14 10:47:33,930 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 10:47:33,930 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 440 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:33,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1518 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:47:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-12-14 10:47:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1256. [2022-12-14 10:47:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 730 states have (on average 2.078082191780822) internal successors, (1517), 1250 states have internal predecessors, (1517), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1533 transitions. [2022-12-14 10:47:33,950 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1533 transitions. Word has length 3 [2022-12-14 10:47:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:33,951 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 1533 transitions. [2022-12-14 10:47:33,951 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 10:47:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1533 transitions. [2022-12-14 10:47:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:47:33,951 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:33,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:47:33,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:34,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:34,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 10:47:34,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:34,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524870843] [2022-12-14 10:47:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:34,153 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 10:47:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:34,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:34,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:34,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:47:34,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:34,258 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 10:47:34,264 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 10:47:34,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:34,318 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 10:47:34,330 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:34,330 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 10:47:34,352 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 10:47:34,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:34,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524870843] [2022-12-14 10:47:34,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524870843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:34,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:34,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:47:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205507804] [2022-12-14 10:47:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:34,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:34,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:34,354 INFO L87 Difference]: Start difference. First operand 1256 states and 1533 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 10:47:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:36,802 INFO L93 Difference]: Finished difference Result 1257 states and 1536 transitions. [2022-12-14 10:47:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:47:36,802 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 10:47:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:36,805 INFO L225 Difference]: With dead ends: 1257 [2022-12-14 10:47:36,806 INFO L226 Difference]: Without dead ends: 1257 [2022-12-14 10:47:36,806 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 10:47:36,806 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 2047 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:36,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 407 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:47:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-12-14 10:47:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1045. [2022-12-14 10:47:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 529 states have (on average 2.0661625708884688) internal successors, (1093), 1039 states have internal predecessors, (1093), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1109 transitions. [2022-12-14 10:47:36,820 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1109 transitions. Word has length 7 [2022-12-14 10:47:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:36,820 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1109 transitions. [2022-12-14 10:47:36,820 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 10:47:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1109 transitions. [2022-12-14 10:47:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:47:36,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:36,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:47:36,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:37,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:37,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 10:47:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:37,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159461759] [2022-12-14 10:47:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:37,026 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 10:47:37,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:37,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:37,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:37,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:47:37,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:37,188 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 10:47:37,197 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 10:47:37,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:37,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:37,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159461759] [2022-12-14 10:47:37,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159461759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:37,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:37,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:47:37,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309957767] [2022-12-14 10:47:37,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:37,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:47:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:37,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:47:37,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:47:37,199 INFO L87 Difference]: Start difference. First operand 1045 states and 1109 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 10:47:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:38,860 INFO L93 Difference]: Finished difference Result 1372 states and 1465 transitions. [2022-12-14 10:47:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:47:38,862 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 10:47:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:38,870 INFO L225 Difference]: With dead ends: 1372 [2022-12-14 10:47:38,870 INFO L226 Difference]: Without dead ends: 1372 [2022-12-14 10:47:38,870 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 10:47:38,871 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 988 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:38,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1196 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 10:47:38,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-12-14 10:47:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 996. [2022-12-14 10:47:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 529 states have (on average 1.9735349716446124) internal successors, (1044), 990 states have internal predecessors, (1044), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1060 transitions. [2022-12-14 10:47:38,900 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1060 transitions. Word has length 8 [2022-12-14 10:47:38,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:38,900 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1060 transitions. [2022-12-14 10:47:38,901 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 10:47:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1060 transitions. [2022-12-14 10:47:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:47:38,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:38,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:47:38,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 10:47:39,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:39,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 10:47:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:39,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803839065] [2022-12-14 10:47:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:39,103 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 10:47:39,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:39,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:39,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:39,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:47:39,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:39,181 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 10:47:39,197 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 10:47:39,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:39,197 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:39,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803839065] [2022-12-14 10:47:39,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803839065] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:39,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:39,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:47:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586846408] [2022-12-14 10:47:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:39,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:47:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:47:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:47:39,199 INFO L87 Difference]: Start difference. First operand 996 states and 1060 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 10:47:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:41,612 INFO L93 Difference]: Finished difference Result 1450 states and 1546 transitions. [2022-12-14 10:47:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:47:41,613 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 10:47:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:41,615 INFO L225 Difference]: With dead ends: 1450 [2022-12-14 10:47:41,615 INFO L226 Difference]: Without dead ends: 1450 [2022-12-14 10:47:41,615 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 10:47:41,616 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 673 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:41,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1597 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:47:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2022-12-14 10:47:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1018. [2022-12-14 10:47:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 561 states have (on average 1.9607843137254901) internal successors, (1100), 1012 states have internal predecessors, (1100), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1116 transitions. [2022-12-14 10:47:41,627 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1116 transitions. Word has length 8 [2022-12-14 10:47:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:41,628 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1116 transitions. [2022-12-14 10:47:41,628 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 10:47:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1116 transitions. [2022-12-14 10:47:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:47:41,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:41,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:47:41,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:41,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 693876885, now seen corresponding path program 1 times [2022-12-14 10:47:41,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:41,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801305318] [2022-12-14 10:47:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:41,831 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 10:47:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:41,833 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:41,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:41,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:47:41,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:41,991 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 10:47:41,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:41,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:41,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801305318] [2022-12-14 10:47:41,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801305318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:41,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:41,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:47:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266390763] [2022-12-14 10:47:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:41,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:41,993 INFO L87 Difference]: Start difference. First operand 1018 states and 1116 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:47:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:42,518 INFO L93 Difference]: Finished difference Result 1468 states and 1599 transitions. [2022-12-14 10:47:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:47:42,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:47:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:42,522 INFO L225 Difference]: With dead ends: 1468 [2022-12-14 10:47:42,522 INFO L226 Difference]: Without dead ends: 1468 [2022-12-14 10:47:42,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:47:42,523 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 547 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:42,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 3013 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:47:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-12-14 10:47:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1258. [2022-12-14 10:47:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 801 states have (on average 1.941323345817728) internal successors, (1555), 1252 states have internal predecessors, (1555), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1571 transitions. [2022-12-14 10:47:42,540 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1571 transitions. Word has length 11 [2022-12-14 10:47:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:42,541 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 1571 transitions. [2022-12-14 10:47:42,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:47:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1571 transitions. [2022-12-14 10:47:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:47:42,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:42,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:47:42,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:42,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:42,743 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr532ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash 35348191, now seen corresponding path program 1 times [2022-12-14 10:47:42,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:42,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001087483] [2022-12-14 10:47:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:42,747 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 10:47:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:42,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:42,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:42,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:47:42,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:42,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:47:42,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:47:42,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:47:42,928 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 30 treesize of output 39 [2022-12-14 10:47:42,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:47:42,968 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 70 treesize of output 26 [2022-12-14 10:47:42,981 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 10:47:42,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:42,981 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:42,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001087483] [2022-12-14 10:47:42,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001087483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:42,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:42,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:47:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236040660] [2022-12-14 10:47:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:42,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:42,982 INFO L87 Difference]: Start difference. First operand 1258 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:47:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:44,359 INFO L93 Difference]: Finished difference Result 1632 states and 2015 transitions. [2022-12-14 10:47:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:47:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 10:47:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:44,362 INFO L225 Difference]: With dead ends: 1632 [2022-12-14 10:47:44,362 INFO L226 Difference]: Without dead ends: 1632 [2022-12-14 10:47:44,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:47:44,363 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 374 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:44,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 2883 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:47:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-12-14 10:47:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1257. [2022-12-14 10:47:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 800 states have (on average 1.94125) internal successors, (1553), 1251 states have internal predecessors, (1553), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1569 transitions. [2022-12-14 10:47:44,388 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1569 transitions. Word has length 12 [2022-12-14 10:47:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:44,388 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1569 transitions. [2022-12-14 10:47:44,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:47:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1569 transitions. [2022-12-14 10:47:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:47:44,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:44,389 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 10:47:44,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 10:47:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:44,590 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:44,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 10:47:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:44,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973871566] [2022-12-14 10:47:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:44,591 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 10:47:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:44,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:44,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:47:44,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:44,738 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 10:47:44,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:44,739 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:44,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973871566] [2022-12-14 10:47:44,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973871566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:44,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:44,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:47:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586754070] [2022-12-14 10:47:44,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:44,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:47:44,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:47:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:47:44,740 INFO L87 Difference]: Start difference. First operand 1257 states and 1569 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 10:47:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:44,757 INFO L93 Difference]: Finished difference Result 1197 states and 1483 transitions. [2022-12-14 10:47:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:47:44,757 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 10:47:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:44,759 INFO L225 Difference]: With dead ends: 1197 [2022-12-14 10:47:44,759 INFO L226 Difference]: Without dead ends: 1197 [2022-12-14 10:47:44,759 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 10:47:44,760 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 972 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1035 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 10:47:44,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1035 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:47:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-12-14 10:47:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2022-12-14 10:47:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 764 states have (on average 1.9201570680628273) internal successors, (1467), 1191 states have internal predecessors, (1467), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1483 transitions. [2022-12-14 10:47:44,771 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1483 transitions. Word has length 18 [2022-12-14 10:47:44,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:44,771 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1483 transitions. [2022-12-14 10:47:44,771 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 10:47:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1483 transitions. [2022-12-14 10:47:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 10:47:44,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:44,772 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 10:47:44,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:44,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:44,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 10:47:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:44,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999186284] [2022-12-14 10:47:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:44,975 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 10:47:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:44,976 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:44,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:45,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:47:45,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:45,112 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 10:47:45,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:45,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:45,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999186284] [2022-12-14 10:47:45,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999186284] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:45,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:45,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:47:45,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681267003] [2022-12-14 10:47:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:45,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:45,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:45,113 INFO L87 Difference]: Start difference. First operand 1197 states and 1483 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 10:47:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:45,166 INFO L93 Difference]: Finished difference Result 1169 states and 1427 transitions. [2022-12-14 10:47:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:47:45,166 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 10:47:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:45,168 INFO L225 Difference]: With dead ends: 1169 [2022-12-14 10:47:45,168 INFO L226 Difference]: Without dead ends: 1169 [2022-12-14 10:47:45,168 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 10:47:45,168 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 953 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1941 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 10:47:45,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1941 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:47:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2022-12-14 10:47:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2022-12-14 10:47:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 748 states have (on average 1.8836898395721926) internal successors, (1409), 1161 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1425 transitions. [2022-12-14 10:47:45,182 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1425 transitions. Word has length 20 [2022-12-14 10:47:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:45,182 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1425 transitions. [2022-12-14 10:47:45,182 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 10:47:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1425 transitions. [2022-12-14 10:47:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:47:45,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:45,182 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 10:47:45,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:45,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:45,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:45,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 10:47:45,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:45,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572969705] [2022-12-14 10:47:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:45,387 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 10:47:45,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:45,390 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:45,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:45,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:47:45,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:45,568 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 10:47:45,631 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 10:47:45,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:45,631 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:45,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572969705] [2022-12-14 10:47:45,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572969705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:45,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:45,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:47:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862215578] [2022-12-14 10:47:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:45,633 INFO L87 Difference]: Start difference. First operand 1167 states and 1425 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 10:47:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:47,562 INFO L93 Difference]: Finished difference Result 1647 states and 2037 transitions. [2022-12-14 10:47:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:47:47,563 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 10:47:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:47,569 INFO L225 Difference]: With dead ends: 1647 [2022-12-14 10:47:47,569 INFO L226 Difference]: Without dead ends: 1647 [2022-12-14 10:47:47,569 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 10:47:47,569 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1729 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:47,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 1056 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 10:47:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2022-12-14 10:47:47,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1163. [2022-12-14 10:47:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 748 states have (on average 1.8729946524064172) internal successors, (1401), 1157 states have internal predecessors, (1401), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1417 transitions. [2022-12-14 10:47:47,582 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1417 transitions. Word has length 34 [2022-12-14 10:47:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:47,582 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1417 transitions. [2022-12-14 10:47:47,583 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 10:47:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1417 transitions. [2022-12-14 10:47:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:47:47,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:47,584 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 10:47:47,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 10:47:47,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:47,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 10:47:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:47,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48813639] [2022-12-14 10:47:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:47,790 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 10:47:47,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:47,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:47,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:47,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:47:47,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:47,939 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 10:47:48,074 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 10:47:48,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:48,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:48,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48813639] [2022-12-14 10:47:48,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48813639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:48,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:48,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:47:48,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076855457] [2022-12-14 10:47:48,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:48,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:48,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:48,076 INFO L87 Difference]: Start difference. First operand 1163 states and 1417 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 10:47:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:50,899 INFO L93 Difference]: Finished difference Result 1781 states and 2195 transitions. [2022-12-14 10:47:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:47:50,900 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 10:47:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:50,904 INFO L225 Difference]: With dead ends: 1781 [2022-12-14 10:47:50,904 INFO L226 Difference]: Without dead ends: 1781 [2022-12-14 10:47:50,905 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 10:47:50,905 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 1176 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:50,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 2130 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 10:47:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-12-14 10:47:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1159. [2022-12-14 10:47:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 748 states have (on average 1.8622994652406417) internal successors, (1393), 1153 states have internal predecessors, (1393), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1409 transitions. [2022-12-14 10:47:50,915 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1409 transitions. Word has length 34 [2022-12-14 10:47:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:50,916 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1409 transitions. [2022-12-14 10:47:50,916 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 10:47:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1409 transitions. [2022-12-14 10:47:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 10:47:50,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:50,917 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 10:47:50,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:51,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:51,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 10:47:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:51,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132971839] [2022-12-14 10:47:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:51,122 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 10:47:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:51,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:51,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:51,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:47:51,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:51,335 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 10:47:51,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:51,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:51,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132971839] [2022-12-14 10:47:51,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132971839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:51,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:51,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:47:51,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144888577] [2022-12-14 10:47:51,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:51,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:51,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:51,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:51,337 INFO L87 Difference]: Start difference. First operand 1159 states and 1409 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 10:47:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:51,390 INFO L93 Difference]: Finished difference Result 1147 states and 1389 transitions. [2022-12-14 10:47:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:47:51,391 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 10:47:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:51,396 INFO L225 Difference]: With dead ends: 1147 [2022-12-14 10:47:51,396 INFO L226 Difference]: Without dead ends: 1147 [2022-12-14 10:47:51,396 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 10:47:51,396 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 922 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1919 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 10:47:51,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1919 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:47:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-12-14 10:47:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2022-12-14 10:47:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 736 states have (on average 1.8654891304347827) internal successors, (1373), 1141 states have internal predecessors, (1373), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1389 transitions. [2022-12-14 10:47:51,405 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1389 transitions. Word has length 52 [2022-12-14 10:47:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:51,406 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1389 transitions. [2022-12-14 10:47:51,406 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 10:47:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1389 transitions. [2022-12-14 10:47:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 10:47:51,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:51,406 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 10:47:51,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-12-14 10:47:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:51,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:51,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 10:47:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:51,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428508881] [2022-12-14 10:47:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:51,611 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 10:47:51,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:51,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:51,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:51,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:47:51,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:51,927 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 10:47:51,934 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 10:47:52,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:52,317 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 10:47:52,328 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:52,328 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 10:47:52,338 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 10:47:52,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:52,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:52,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428508881] [2022-12-14 10:47:52,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428508881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:52,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:52,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:47:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2217730] [2022-12-14 10:47:52,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:52,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:47:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:52,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:47:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:47:52,340 INFO L87 Difference]: Start difference. First operand 1147 states and 1389 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 10:47:54,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:54,815 INFO L93 Difference]: Finished difference Result 1559 states and 1926 transitions. [2022-12-14 10:47:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:47:54,816 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 10:47:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:54,818 INFO L225 Difference]: With dead ends: 1559 [2022-12-14 10:47:54,818 INFO L226 Difference]: Without dead ends: 1559 [2022-12-14 10:47:54,818 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 10:47:54,819 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1210 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:54,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 552 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:47:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2022-12-14 10:47:54,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1077. [2022-12-14 10:47:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 704 states have (on average 1.8025568181818181) internal successors, (1269), 1071 states have internal predecessors, (1269), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1285 transitions. [2022-12-14 10:47:54,828 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1285 transitions. Word has length 60 [2022-12-14 10:47:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:54,828 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1285 transitions. [2022-12-14 10:47:54,828 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 10:47:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1285 transitions. [2022-12-14 10:47:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 10:47:54,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:54,829 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 10:47:54,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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)] Forceful destruction successful, exit code 0 [2022-12-14 10:47:55,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:55,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 10:47:55,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:55,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406702815] [2022-12-14 10:47:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:55,030 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 10:47:55,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:55,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:55,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:55,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:47:55,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:55,247 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 10:47:55,258 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 10:47:55,279 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 10:47:55,286 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 10:47:55,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:55,287 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:55,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406702815] [2022-12-14 10:47:55,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406702815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:55,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:55,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:47:55,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397051587] [2022-12-14 10:47:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:55,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:47:55,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:55,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:47:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:47:55,288 INFO L87 Difference]: Start difference. First operand 1077 states and 1285 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 10:47:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:57,261 INFO L93 Difference]: Finished difference Result 1076 states and 1284 transitions. [2022-12-14 10:47:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:47:57,262 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 10:47:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:57,263 INFO L225 Difference]: With dead ends: 1076 [2022-12-14 10:47:57,263 INFO L226 Difference]: Without dead ends: 1076 [2022-12-14 10:47:57,263 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 10:47:57,264 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 4 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:57,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2349 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 10:47:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-12-14 10:47:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076. [2022-12-14 10:47:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 704 states have (on average 1.8011363636363635) internal successors, (1268), 1070 states have internal predecessors, (1268), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:47:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1284 transitions. [2022-12-14 10:47:57,272 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1284 transitions. Word has length 65 [2022-12-14 10:47:57,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:57,272 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1284 transitions. [2022-12-14 10:47:57,272 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 10:47:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1284 transitions. [2022-12-14 10:47:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 10:47:57,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:57,273 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 10:47:57,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-14 10:47:57,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:57,474 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:47:57,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 10:47:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:57,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358308752] [2022-12-14 10:47:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:57,478 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 10:47:57,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:57,482 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:57,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:47:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:57,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 10:47:57,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:57,688 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 10:47:57,704 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 10:47:57,712 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 10:47:57,754 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 10:47:57,758 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 10:47:57,771 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 10:47:57,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:57,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:57,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358308752] [2022-12-14 10:47:57,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358308752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:57,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:57,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:47:57,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491488892] [2022-12-14 10:47:57,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:57,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:47:57,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:57,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:47:57,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:47:57,773 INFO L87 Difference]: Start difference. First operand 1076 states and 1284 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 10:48:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:00,359 INFO L93 Difference]: Finished difference Result 1075 states and 1283 transitions. [2022-12-14 10:48:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:48:00,360 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 10:48:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:00,362 INFO L225 Difference]: With dead ends: 1075 [2022-12-14 10:48:00,362 INFO L226 Difference]: Without dead ends: 1075 [2022-12-14 10:48:00,362 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 10:48:00,363 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 2 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:00,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2386 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 10:48:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-12-14 10:48:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1075. [2022-12-14 10:48:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 703 states have (on average 1.802275960170697) internal successors, (1267), 1069 states have internal predecessors, (1267), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:48:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1283 transitions. [2022-12-14 10:48:00,370 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1283 transitions. Word has length 65 [2022-12-14 10:48:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:00,370 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1283 transitions. [2022-12-14 10:48:00,371 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 10:48:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1283 transitions. [2022-12-14 10:48:00,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 10:48:00,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:00,371 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 10:48:00,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:00,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:00,572 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:48:00,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1194445041, now seen corresponding path program 1 times [2022-12-14 10:48:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:48:00,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161262496] [2022-12-14 10:48:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:00,576 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 10:48:00,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:48:00,577 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:00,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:00,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:48:00,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:00,817 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 10:48:00,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:48:00,818 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:48:00,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161262496] [2022-12-14 10:48:00,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161262496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:00,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:00,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:48:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80041097] [2022-12-14 10:48:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:48:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:48:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:48:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:48:00,820 INFO L87 Difference]: Start difference. First operand 1075 states and 1283 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 10:48:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:00,860 INFO L93 Difference]: Finished difference Result 1078 states and 1287 transitions. [2022-12-14 10:48:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:48:00,861 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 10:48:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:00,863 INFO L225 Difference]: With dead ends: 1078 [2022-12-14 10:48:00,863 INFO L226 Difference]: Without dead ends: 1078 [2022-12-14 10:48:00,863 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 10:48:00,864 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 2 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2731 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 10:48:00,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2731 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:48:00,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-12-14 10:48:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1078. [2022-12-14 10:48:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 705 states have (on average 1.801418439716312) internal successors, (1270), 1072 states have internal predecessors, (1270), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 10:48:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1287 transitions. [2022-12-14 10:48:00,880 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1287 transitions. Word has length 73 [2022-12-14 10:48:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:00,881 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1287 transitions. [2022-12-14 10:48:00,881 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 10:48:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1287 transitions. [2022-12-14 10:48:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:48:00,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:00,882 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 10:48:00,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:01,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:01,083 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:48:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1683735442, now seen corresponding path program 1 times [2022-12-14 10:48:01,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:48:01,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185643047] [2022-12-14 10:48:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:01,086 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 10:48:01,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:48:01,089 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:01,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:01,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:48:01,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:01,321 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 10:48:01,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:01,376 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 10:48:01,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:48:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185643047] [2022-12-14 10:48:01,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185643047] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1837162305] [2022-12-14 10:48:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:01,376 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:48:01,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:48:01,377 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:48:01,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-14 10:48:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:01,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:48:01,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:01,861 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 10:48:01,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:01,889 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 10:48:01,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1837162305] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:01,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111243580] [2022-12-14 10:48:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:01,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:01,890 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:01,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 10:48:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:02,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:48:02,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:02,135 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 10:48:02,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:02,165 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 10:48:02,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111243580] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:02,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:48:02,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 10:48:02,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676994932] [2022-12-14 10:48:02,165 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:48:02,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:48:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:48:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:48:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:48:02,166 INFO L87 Difference]: Start difference. First operand 1078 states and 1287 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 10:48:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:02,309 INFO L93 Difference]: Finished difference Result 1090 states and 1304 transitions. [2022-12-14 10:48:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:48:02,309 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 10:48:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:02,312 INFO L225 Difference]: With dead ends: 1090 [2022-12-14 10:48:02,312 INFO L226 Difference]: Without dead ends: 1090 [2022-12-14 10:48:02,312 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 10:48:02,313 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 10 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:02,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2734 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:48:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-12-14 10:48:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1088. [2022-12-14 10:48:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 714 states have (on average 1.7997198879551821) internal successors, (1285), 1081 states have internal predecessors, (1285), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 10:48:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1302 transitions. [2022-12-14 10:48:02,328 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1302 transitions. Word has length 74 [2022-12-14 10:48:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:02,328 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1302 transitions. [2022-12-14 10:48:02,328 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 10:48:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1302 transitions. [2022-12-14 10:48:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 10:48:02,329 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:02,329 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 10:48:02,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:02,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:02,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:02,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:02,931 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:48:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1059842353, now seen corresponding path program 2 times [2022-12-14 10:48:02,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:48:02,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266012707] [2022-12-14 10:48:02,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:48:02,934 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 10:48:02,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:48:02,935 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:02,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 10:48:03,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:48:03,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:48:03,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:48:03,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:03,369 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 10:48:03,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:03,499 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 10:48:03,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:48:03,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266012707] [2022-12-14 10:48:03,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266012707] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:03,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1292403752] [2022-12-14 10:48:03,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:48:03,500 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:48:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:48:03,501 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:48:03,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 10:48:04,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:48:04,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:48:04,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:48:04,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:04,876 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 10:48:04,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:04,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1292403752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:04,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625348512] [2022-12-14 10:48:04,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:48:04,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:04,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:04,935 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:04,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 10:48:17,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:48:17,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:48:17,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 10:48:17,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:17,100 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:48:17,101 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 10:48:17,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:48:17,136 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 10:48:17,145 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 10:48:17,272 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 10:48:17,276 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 10:48:17,354 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1586 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1586) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1587 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1587) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:48:17,415 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591))) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:48:17,424 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:48:17,470 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 10:48:17,470 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 10:48:17,482 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 10:48:17,563 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 10:48:17,568 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 10:48:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-14 10:48:17,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:17,903 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1604 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1604) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-12-14 10:48:17,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625348512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:17,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 10:48:17,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 10:48:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960785160] [2022-12-14 10:48:17,909 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 10:48:17,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 10:48:17,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:48:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 10:48:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=16, NotChecked=188, Total=756 [2022-12-14 10:48:17,910 INFO L87 Difference]: Start difference. First operand 1088 states and 1302 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 10:48:20,092 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1588 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1588))) (exists ((v_ArrVal_1589 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1589))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:48:20,233 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:48:20,454 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 10:48:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:41,693 INFO L93 Difference]: Finished difference Result 2863 states and 3533 transitions. [2022-12-14 10:48:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 10:48:41,693 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 10:48:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:41,700 INFO L225 Difference]: With dead ends: 2863 [2022-12-14 10:48:41,700 INFO L226 Difference]: Without dead ends: 2851 [2022-12-14 10:48:41,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=443, Invalid=2589, Unknown=76, NotChecked=798, Total=3906 [2022-12-14 10:48:41,704 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 2061 mSDsluCounter, 11013 mSDsCounter, 0 mSdLazyCounter, 14005 mSolverCounterSat, 36 mSolverCounterUnsat, 1221 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 11899 SdHoareTripleChecker+Invalid, 20167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 14005 IncrementalHoareTripleChecker+Invalid, 1221 IncrementalHoareTripleChecker+Unknown, 4905 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:41,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 11899 Invalid, 20167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 14005 Invalid, 1221 Unknown, 4905 Unchecked, 22.0s Time] [2022-12-14 10:48:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-12-14 10:48:41,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1104. [2022-12-14 10:48:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 729 states have (on average 1.786008230452675) internal successors, (1302), 1096 states have internal predecessors, (1302), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-14 10:48:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1320 transitions. [2022-12-14 10:48:41,720 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1320 transitions. Word has length 77 [2022-12-14 10:48:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:41,720 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1320 transitions. [2022-12-14 10:48:41,720 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 10:48:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1320 transitions. [2022-12-14 10:48:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 10:48:41,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:41,720 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 10:48:41,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:41,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 10:48:42,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 10:48:42,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:42,323 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:48:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:42,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1674911122, now seen corresponding path program 1 times [2022-12-14 10:48:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:48:42,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572912427] [2022-12-14 10:48:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:42,325 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 10:48:42,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:48:42,326 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:42,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 10:48:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:42,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:48:42,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:42,718 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 10:48:42,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:43,184 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 10:48:43,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:48:43,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572912427] [2022-12-14 10:48:43,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572912427] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:43,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [719064856] [2022-12-14 10:48:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:43,185 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:48:43,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:48:43,185 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:48:43,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 10:48:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:43,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:48:43,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:43,643 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 10:48:43,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:43,759 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 10:48:43,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [719064856] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:43,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899012519] [2022-12-14 10:48:43,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:43,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:43,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:43,761 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:43,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 10:48:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:44,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:48:44,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:44,080 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 10:48:44,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:44,897 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 10:48:44,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899012519] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:44,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:48:44,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-12-14 10:48:44,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987267495] [2022-12-14 10:48:44,898 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:48:44,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 10:48:44,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:48:44,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 10:48:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 10:48:44,901 INFO L87 Difference]: Start difference. First operand 1104 states and 1320 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:48:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:47,598 INFO L93 Difference]: Finished difference Result 1141 states and 1368 transitions. [2022-12-14 10:48:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 10:48:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2022-12-14 10:48:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:47,602 INFO L225 Difference]: With dead ends: 1141 [2022-12-14 10:48:47,602 INFO L226 Difference]: Without dead ends: 1133 [2022-12-14 10:48:47,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 10:48:47,604 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 48 mSDsluCounter, 11912 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 12833 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:47,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 12833 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:48:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-12-14 10:48:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1115. [2022-12-14 10:48:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 741 states have (on average 1.775978407557355) internal successors, (1316), 1108 states have internal predecessors, (1316), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 10:48:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1333 transitions. [2022-12-14 10:48:47,615 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1333 transitions. Word has length 83 [2022-12-14 10:48:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:47,615 INFO L495 AbstractCegarLoop]: Abstraction has 1115 states and 1333 transitions. [2022-12-14 10:48:47,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:48:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1333 transitions. [2022-12-14 10:48:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 10:48:47,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:47,616 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:47,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:47,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-14 10:48:48,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-14 10:48:48,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:48,218 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 531 more)] === [2022-12-14 10:48:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1111806383, now seen corresponding path program 3 times [2022-12-14 10:48:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:48:48,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575454398] [2022-12-14 10:48:48,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:48:48,222 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 10:48:48,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:48:48,223 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -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 10:48:48,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-14 10:48:49,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 10:48:49,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:48:49,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 10:48:49,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:49,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:52,014 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:48:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575454398] [2022-12-14 10:48:52,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575454398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1705007865] [2022-12-14 10:48:52,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:48:52,014 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:48:52,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:48:52,015 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:48:52,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-12-14 10:49:20,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 10:49:20,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:49:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 10:49:20,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:49:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:49:20,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:49:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:49:21,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1705007865] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:49:21,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206338506] [2022-12-14 10:49:21,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:49:21,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:49:21,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:49:21,044 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:49:21,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9ac27c-2415-4ce3-826a-5beb866cc2eb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process