./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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-8393723 [2022-11-19 07:10:35,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:10:35,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:10:35,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:10:35,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:10:35,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:10:35,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:10:35,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:10:35,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:10:35,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:10:35,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:10:35,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:10:35,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:10:35,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:10:35,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:10:35,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:10:35,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:10:35,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:10:35,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:10:35,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:10:35,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:10:35,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:10:35,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:10:35,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:10:35,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:10:35,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:10:35,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:10:35,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:10:35,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:10:35,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:10:35,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:10:35,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:10:35,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:10:35,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:10:35,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:10:35,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:10:35,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:10:35,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:10:35,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:10:35,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:10:35,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:10:35,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:10:35,527 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:10:35,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:10:35,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:10:35,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:10:35,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:10:35,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:10:35,530 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:10:35,530 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:10:35,530 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:10:35,530 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:10:35,531 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:10:35,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:10:35,532 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:10:35,532 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:10:35,532 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:10:35,533 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:10:35,533 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:10:35,533 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:10:35,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:10:35,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:10:35,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:10:35,536 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:10:35,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:10:35,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:10:35,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:10:35,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:10:35,537 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:10:35,537 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:10:35,537 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:10:35,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:10:35,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:10:35,538 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:10:35,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:10:35,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:10:35,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:10:35,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:35,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:10:35,540 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:10:35,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:10:35,540 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:10:35,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:10:35,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:10:35,541 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-19 07:10:35,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:10:35,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:10:35,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:10:35,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:10:35,856 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:10:35,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-19 07:10:35,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/03fcefeeb/ea931dfd38144508b251bf88f0f4b8d2/FLAG1c0da7d34 [2022-11-19 07:10:36,363 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:10:36,364 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-19 07:10:36,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/03fcefeeb/ea931dfd38144508b251bf88f0f4b8d2/FLAG1c0da7d34 [2022-11-19 07:10:36,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/03fcefeeb/ea931dfd38144508b251bf88f0f4b8d2 [2022-11-19 07:10:36,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:10:36,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:10:36,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:36,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:10:36,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:10:36,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:36" (1/1) ... [2022-11-19 07:10:36,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed7f171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:36, skipping insertion in model container [2022-11-19 07:10:36,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:36" (1/1) ... [2022-11-19 07:10:36,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:10:36,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:10:37,102 WARN L234 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-19 07:10:37,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:37,144 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) [2022-11-19 07:10:37,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e9d9a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:37, skipping insertion in model container [2022-11-19 07:10:37,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:37,146 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 07:10:37,149 INFO L158 Benchmark]: Toolchain (without parser) took 394.94ms. Allocated memory is still 165.7MB. Free memory was 129.2MB in the beginning and 138.0MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:10:37,151 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 165.7MB. Free memory was 138.0MB in the beginning and 138.0MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:10:37,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.34ms. Allocated memory is still 165.7MB. Free memory was 128.9MB in the beginning and 138.0MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:10:37,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 165.7MB. Free memory was 138.0MB in the beginning and 138.0MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.34ms. Allocated memory is still 165.7MB. Free memory was 128.9MB in the beginning and 138.0MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 195]: 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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-8393723 [2022-11-19 07:10:39,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:10:39,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:10:39,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:10:39,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:10:39,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:10:39,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:10:39,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:10:39,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:10:39,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:10:39,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:10:39,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:10:39,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:10:39,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:10:39,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:10:39,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:10:39,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:10:39,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:10:39,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:10:39,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:10:39,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:10:39,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:10:39,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:10:39,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:10:39,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:10:39,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:10:39,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:10:39,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:10:39,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:10:39,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:10:39,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:10:39,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:10:39,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:10:39,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:10:39,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:10:39,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:10:39,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:10:39,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:10:39,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:10:39,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:10:39,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:10:39,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 07:10:39,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:10:39,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:10:39,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:10:39,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:10:39,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:10:39,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:10:39,687 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:10:39,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:10:39,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:10:39,688 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:10:39,689 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:10:39,689 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:10:39,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:10:39,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:10:39,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:10:39,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:10:39,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:10:39,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:10:39,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:10:39,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:10:39,692 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:10:39,692 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:10:39,692 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:10:39,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:10:39,693 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:10:39,693 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:10:39,693 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:10:39,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:10:39,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:10:39,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:10:39,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:10:39,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:10:39,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:39,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:10:39,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:10:39,697 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:10:39,697 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:39,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:10:39,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:10:39,698 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-19 07:10:40,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:10:40,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:10:40,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:10:40,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:10:40,149 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:10:40,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-19 07:10:40,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/68c185651/d8b1287757464842a33ab90c676c3be8/FLAG13b68c4f1 [2022-11-19 07:10:40,765 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:10:40,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-19 07:10:40,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/68c185651/d8b1287757464842a33ab90c676c3be8/FLAG13b68c4f1 [2022-11-19 07:10:41,124 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/data/68c185651/d8b1287757464842a33ab90c676c3be8 [2022-11-19 07:10:41,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:10:41,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:10:41,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:41,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:10:41,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:10:41,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318621aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41, skipping insertion in model container [2022-11-19 07:10:41,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:10:41,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:10:41,510 WARN L234 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-19 07:10:41,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:41,545 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:10:41,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:10:41,586 WARN L234 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-19 07:10:41,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:41,598 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:10:41,655 WARN L234 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_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-19 07:10:41,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:10:41,689 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:10:41,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41 WrapperNode [2022-11-19 07:10:41,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:41,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:41,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:10:41,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:10:41,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,787 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 442 [2022-11-19 07:10:41,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:10:41,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:10:41,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:10:41,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:10:41,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:10:41,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:10:41,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:10:41,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:10:41,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (1/1) ... [2022-11-19 07:10:41,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:41,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:41,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:10:41,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:10:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:10:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:10:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:10:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:10:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 07:10:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 07:10:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 07:10:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 07:10:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 07:10:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 07:10:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-19 07:10:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-19 07:10:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 07:10:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 07:10:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:10:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:10:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:10:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:10:41,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:10:41,969 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:10:42,190 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:10:42,192 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:10:43,499 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:10:43,998 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:10:43,999 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-19 07:10:44,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:44 BoogieIcfgContainer [2022-11-19 07:10:44,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:10:44,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:10:44,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:10:44,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:10:44,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:10:41" (1/3) ... [2022-11-19 07:10:44,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101e6dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:44, skipping insertion in model container [2022-11-19 07:10:44,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:41" (2/3) ... [2022-11-19 07:10:44,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101e6dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:10:44, skipping insertion in model container [2022-11-19 07:10:44,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:10:44" (3/3) ... [2022-11-19 07:10:44,021 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-19 07:10:44,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:10:44,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-11-19 07:10:44,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:10:44,227 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-19 07:10:44,278 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:10:44,296 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 366 transitions, 764 flow [2022-11-19 07:10:44,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 366 transitions, 764 flow [2022-11-19 07:10:44,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 366 transitions, 764 flow [2022-11-19 07:10:44,514 INFO L130 PetriNetUnfolder]: 25/362 cut-off events. [2022-11-19 07:10:44,514 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-19 07:10:44,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 362 events. 25/362 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 377 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-11-19 07:10:44,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 6208 [2022-11-19 07:12:05,798 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 161 DAG size of output: 160 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:12:16,861 WARN L233 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 167 DAG size of output: 166 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:12:20,673 INFO L134 LiptonReduction]: Checked pairs total: 20621 [2022-11-19 07:12:20,673 INFO L136 LiptonReduction]: Total number of compositions: 393 [2022-11-19 07:12:20,681 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 95 transitions, 222 flow [2022-11-19 07:12:22,689 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32015 states, 26013 states have (on average 5.636489447583901) internal successors, (146622), 32014 states have internal predecessors, (146622), 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) [2022-11-19 07:12:22,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:12:22,718 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;@25435d17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:12:22,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-19 07:12:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 32015 states, 26013 states have (on average 5.636489447583901) internal successors, (146622), 32014 states have internal predecessors, (146622), 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) [2022-11-19 07:12:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 07:12:22,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:22,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 07:12:22,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-19 07:12:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash 61250, now seen corresponding path program 1 times [2022-11-19 07:12:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:22,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706032334] [2022-11-19 07:12:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:22,848 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 [2022-11-19 07:12:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:22,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:12:22,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:12:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:23,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:12:23,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:23,551 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-19 07:12:23,552 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-19 07:12:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:23,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:23,596 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:23,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706032334] [2022-11-19 07:12:23,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706032334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:23,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:23,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:12:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200199126] [2022-11-19 07:12:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:23,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:23,695 INFO L87 Difference]: Start difference. First operand has 32015 states, 26013 states have (on average 5.636489447583901) internal successors, (146622), 32014 states have internal predecessors, (146622), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 07:12:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:25,416 INFO L93 Difference]: Finished difference Result 30410 states and 139224 transitions. [2022-11-19 07:12:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 07:12:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:25,903 INFO L225 Difference]: With dead ends: 30410 [2022-11-19 07:12:25,904 INFO L226 Difference]: Without dead ends: 30410 [2022-11-19 07:12:25,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:25,912 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:25,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:12:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30410 states. [2022-11-19 07:12:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30410 to 30410. [2022-11-19 07:12:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30410 states, 24850 states have (on average 5.602575452716298) internal successors, (139224), 30409 states have internal predecessors, (139224), 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) [2022-11-19 07:12:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30410 states to 30410 states and 139224 transitions. [2022-11-19 07:12:28,530 INFO L78 Accepts]: Start accepts. Automaton has 30410 states and 139224 transitions. Word has length 2 [2022-11-19 07:12:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:28,534 INFO L495 AbstractCegarLoop]: Abstraction has 30410 states and 139224 transitions. [2022-11-19 07:12:28,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 07:12:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 30410 states and 139224 transitions. [2022-11-19 07:12:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 07:12:28,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:28,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 07:12:28,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:12:28,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:28,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-19 07:12:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash 61251, now seen corresponding path program 1 times [2022-11-19 07:12:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:28,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039619435] [2022-11-19 07:12:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:28,762 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 [2022-11-19 07:12:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:28,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:12:28,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:12:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:28,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:12:28,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:29,148 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-19 07:12:29,149 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-19 07:12:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:29,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:29,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039619435] [2022-11-19 07:12:29,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039619435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:29,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:29,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:12:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473340983] [2022-11-19 07:12:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:29,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:29,202 INFO L87 Difference]: Start difference. First operand 30410 states and 139224 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 07:12:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:31,691 INFO L93 Difference]: Finished difference Result 60815 states and 278443 transitions. [2022-11-19 07:12:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:31,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 07:12:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:32,514 INFO L225 Difference]: With dead ends: 60815 [2022-11-19 07:12:32,515 INFO L226 Difference]: Without dead ends: 60815 [2022-11-19 07:12:32,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:32,516 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:32,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:12:32,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60815 states. [2022-11-19 07:12:34,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60815 to 30414. [2022-11-19 07:12:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30414 states, 24854 states have (on average 5.602076124567474) internal successors, (139234), 30413 states have internal predecessors, (139234), 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) [2022-11-19 07:12:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30414 states to 30414 states and 139234 transitions. [2022-11-19 07:12:35,502 INFO L78 Accepts]: Start accepts. Automaton has 30414 states and 139234 transitions. Word has length 2 [2022-11-19 07:12:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:35,503 INFO L495 AbstractCegarLoop]: Abstraction has 30414 states and 139234 transitions. [2022-11-19 07:12:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 07:12:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 30414 states and 139234 transitions. [2022-11-19 07:12:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:12:35,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:35,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:12:35,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:35,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:35,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-19 07:12:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1904976, now seen corresponding path program 1 times [2022-11-19 07:12:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:35,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144426835] [2022-11-19 07:12:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:35,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:35,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:35,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:12:35,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:12:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:35,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:12:35,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:36,118 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-19 07:12:36,119 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-19 07:12:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:36,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:36,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:36,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144426835] [2022-11-19 07:12:36,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144426835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:36,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1241088132] [2022-11-19 07:12:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:36,475 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:36,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:36,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-19 07:12:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:36,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:12:36,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:36,898 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-19 07:12:36,898 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-19 07:12:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:36,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:37,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1241088132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:37,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914917597] [2022-11-19 07:12:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:37,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:37,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:37,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:37,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:12:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:37,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:12:37,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:37,409 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-19 07:12:37,409 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-19 07:12:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:37,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:37,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914917597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:37,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:12:37,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2022-11-19 07:12:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974140417] [2022-11-19 07:12:37,599 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:12:37,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:12:37,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:37,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:12:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:37,600 INFO L87 Difference]: Start difference. First operand 30414 states and 139234 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-19 07:12:41,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:45,988 INFO L93 Difference]: Finished difference Result 121629 states and 556891 transitions. [2022-11-19 07:12:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:12:45,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 [2022-11-19 07:12:45,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:47,221 INFO L225 Difference]: With dead ends: 121629 [2022-11-19 07:12:47,221 INFO L226 Difference]: Without dead ends: 121629 [2022-11-19 07:12:47,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:12:47,223 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 573 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:47,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 0 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 07:12:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121629 states. [2022-11-19 07:12:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121629 to 30426. [2022-11-19 07:12:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30426 states, 24866 states have (on average 5.600579103997426) internal successors, (139264), 30425 states have internal predecessors, (139264), 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) [2022-11-19 07:12:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30426 states to 30426 states and 139264 transitions. [2022-11-19 07:12:51,246 INFO L78 Accepts]: Start accepts. Automaton has 30426 states and 139264 transitions. Word has length 3 [2022-11-19 07:12:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:51,247 INFO L495 AbstractCegarLoop]: Abstraction has 30426 states and 139264 transitions. [2022-11-19 07:12:51,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-19 07:12:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 30426 states and 139264 transitions. [2022-11-19 07:12:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:12:51,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:51,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:12:51,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:51,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:51,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:51,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:51,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-19 07:12:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1833994501, now seen corresponding path program 1 times [2022-11-19 07:12:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:51,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371730333] [2022-11-19 07:12:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:51,854 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 [2022-11-19 07:12:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:51,855 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:12:51,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:12:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:52,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 07:12:52,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:52,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,354 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-19 07:12:52,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-19 07:12:52,422 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-19 07:12:52,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-19 07:12:52,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,494 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 [2022-11-19 07:12:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:52,536 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 [2022-11-19 07:12:52,544 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 [2022-11-19 07:12:52,658 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:12:52,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-19 07:12:52,699 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:12:52,700 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 [2022-11-19 07:12:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:12:52,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:52,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:52,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371730333] [2022-11-19 07:12:52,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371730333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:52,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:52,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:52,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693228471] [2022-11-19 07:12:52,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:52,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:12:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:12:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:12:52,795 INFO L87 Difference]: Start difference. First operand 30426 states and 139264 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-19 07:12:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:54,269 INFO L93 Difference]: Finished difference Result 30427 states and 139267 transitions. [2022-11-19 07:12:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:12:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-19 07:12:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:54,581 INFO L225 Difference]: With dead ends: 30427 [2022-11-19 07:12:54,582 INFO L226 Difference]: Without dead ends: 30427 [2022-11-19 07:12:54,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:12:54,584 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:54,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 162 Unchecked, 0.6s Time] [2022-11-19 07:12:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30427 states. [2022-11-19 07:12:55,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30427 to 30427. [2022-11-19 07:12:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30427 states, 24867 states have (on average 5.600474524470181) internal successors, (139267), 30426 states have internal predecessors, (139267), 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) [2022-11-19 07:12:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30427 states to 30427 states and 139267 transitions. [2022-11-19 07:12:55,987 INFO L78 Accepts]: Start accepts. Automaton has 30427 states and 139267 transitions. Word has length 5 [2022-11-19 07:12:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:55,987 INFO L495 AbstractCegarLoop]: Abstraction has 30427 states and 139267 transitions. [2022-11-19 07:12:55,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-19 07:12:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 30427 states and 139267 transitions. [2022-11-19 07:12:55,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:12:55,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:55,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:12:55,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:12:56,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:56,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-19 07:12:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1833994503, now seen corresponding path program 1 times [2022-11-19 07:12:56,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:56,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88430025] [2022-11-19 07:12:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:56,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:12:56,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:56,192 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:12:56,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:12:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:56,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:12:56,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:56,638 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-19 07:12:56,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-19 07:12:57,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:57,150 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:12:57,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-19 07:12:57,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:12:57,453 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-19 07:12:57,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-19 07:12:58,302 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-19 07:12:58,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 84 [2022-11-19 07:13:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:01,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:13:01,174 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:01,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88430025] [2022-11-19 07:13:01,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88430025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:01,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:13:01,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:13:01,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040552950] [2022-11-19 07:13:01,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:01,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:13:01,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:13:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:13:01,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2022-11-19 07:13:01,176 INFO L87 Difference]: Start difference. First operand 30427 states and 139267 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2022-11-19 07:13:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:02,402 INFO L93 Difference]: Finished difference Result 30430 states and 139273 transitions. [2022-11-19 07:13:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:13:02,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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 5 [2022-11-19 07:13:02,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:02,752 INFO L225 Difference]: With dead ends: 30430 [2022-11-19 07:13:02,752 INFO L226 Difference]: Without dead ends: 30430 [2022-11-19 07:13:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2022-11-19 07:13:02,753 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:02,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 160 Unchecked, 0.4s Time] [2022-11-19 07:13:02,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30430 states. [2022-11-19 07:13:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30430 to 30430. [2022-11-19 07:13:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30430 states, 24870 states have (on average 5.600040209087254) internal successors, (139273), 30429 states have internal predecessors, (139273), 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) [2022-11-19 07:13:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30430 states to 30430 states and 139273 transitions. [2022-11-19 07:13:04,379 INFO L78 Accepts]: Start accepts. Automaton has 30430 states and 139273 transitions. Word has length 5 [2022-11-19 07:13:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:04,380 INFO L495 AbstractCegarLoop]: Abstraction has 30430 states and 139273 transitions. [2022-11-19 07:13:04,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2022-11-19 07:13:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 30430 states and 139273 transitions. [2022-11-19 07:13:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:13:04,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:04,381 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-19 07:13:04,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:04,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:13:04,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-19 07:13:04,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash 922716803, now seen corresponding path program 2 times [2022-11-19 07:13:04,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:04,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700572736] [2022-11-19 07:13:04,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:13:04,583 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 [2022-11-19 07:13:04,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:04,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:13:04,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:13:04,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:13:04,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:13:04,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:13:04,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:05,020 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-19 07:13:05,020 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-19 07:13:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:05,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:06,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:06,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700572736] [2022-11-19 07:13:06,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700572736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:06,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1502791890] [2022-11-19 07:13:06,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:13:06,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:06,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:06,047 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:06,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:13:06,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:13:06,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:13:06,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:13:06,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:06,763 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-19 07:13:06,763 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-19 07:13:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:06,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:08,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1502791890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:08,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617586021] [2022-11-19 07:13:08,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:13:08,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:13:08,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:13:08,060 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:13:08,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:13:08,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:13:08,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:13:08,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:13:08,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:08,505 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-19 07:13:08,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-19 07:13:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:08,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:13:08,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617586021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:08,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:13:08,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 15 [2022-11-19 07:13:08,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669094887] [2022-11-19 07:13:08,797 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:13:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:13:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:13:08,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:13:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:13:08,798 INFO L87 Difference]: Start difference. First operand 30430 states and 139273 transitions. Second operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-11-19 07:13:13,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:15,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:17,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:18,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:20,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:23,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:25,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:26,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:27,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:29,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:30,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:32,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:34,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:36,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:39,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:41,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:43,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:46,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:47,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:48,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:50,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:53,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:55,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:57,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:59,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:02,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:05,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:19,886 INFO L93 Difference]: Finished difference Result 243259 states and 1113787 transitions. [2022-11-19 07:14:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:14:19,887 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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 6 [2022-11-19 07:14:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:22,766 INFO L225 Difference]: With dead ends: 243259 [2022-11-19 07:14:22,767 INFO L226 Difference]: Without dead ends: 243259 [2022-11-19 07:14:22,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=230, Invalid=420, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:14:22,768 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2017 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 206 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:22,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 0 Invalid, 2849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2632 Invalid, 11 Unknown, 0 Unchecked, 64.4s Time] [2022-11-19 07:14:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243259 states. [2022-11-19 07:14:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243259 to 30451. [2022-11-19 07:14:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30451 states, 24891 states have (on average 5.597364509260375) internal successors, (139324), 30450 states have internal predecessors, (139324), 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) [2022-11-19 07:14:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30451 states to 30451 states and 139324 transitions. [2022-11-19 07:14:27,723 INFO L78 Accepts]: Start accepts. Automaton has 30451 states and 139324 transitions. Word has length 6 [2022-11-19 07:14:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:27,723 INFO L495 AbstractCegarLoop]: Abstraction has 30451 states and 139324 transitions. [2022-11-19 07:14:27,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-11-19 07:14:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 30451 states and 139324 transitions. [2022-11-19 07:14:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:14:27,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:27,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:14:27,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:14:27,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:28,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:28,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:28,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-19 07:14:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash 925831130, now seen corresponding path program 1 times [2022-11-19 07:14:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:14:28,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863877401] [2022-11-19 07:14:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:28,327 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 [2022-11-19 07:14:28,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:14:28,328 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:14:28,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d8fadd-fc77-4a4c-8b08-f1e287a7164f/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:14:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:29,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 07:14:29,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:29,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:14:29,337 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-19 07:14:29,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-19 07:14:30,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:14:30,349 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-19 07:14:30,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-19 07:14:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:14:31,419 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-11-19 07:14:31,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 146 [2022-11-19 07:15:03,271 WARN L233 SmtUtils]: Spent 14.61s on a formula simplification. DAG size of input: 280 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:04,238 INFO L321 Elim1Store]: treesize reduction 64, result has 70.4 percent of original size [2022-11-19 07:15:04,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 281