./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-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_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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_6c2d0344-d5bf-4144-b86e-7f536c376607/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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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 06:57:28,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:57:28,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:57:28,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:57:28,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:57:28,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:57:28,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:57:28,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:57:28,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:57:28,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:57:28,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:57:28,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:57:28,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:57:28,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:57:28,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:57:28,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:57:28,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:57:28,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:57:28,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:57:28,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:57:28,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:57:28,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:57:28,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:57:28,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:57:28,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:57:28,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:57:28,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:57:28,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:57:28,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:57:28,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:57:28,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:57:28,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:57:28,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:57:28,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:57:28,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:57:28,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:57:28,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:57:28,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:57:28,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:57:28,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:57:28,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:57:28,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 06:57:28,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:57:28,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:57:28,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:57:28,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:57:28,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:57:28,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:57:28,323 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:57:28,323 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:57:28,323 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:57:28,323 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:57:28,325 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:57:28,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:57:28,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:57:28,326 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:57:28,326 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:57:28,326 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:57:28,326 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:57:28,327 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:57:28,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:57:28,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:57:28,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:57:28,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:57:28,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:57:28,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:57:28,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:57:28,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:57:28,331 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:57:28,331 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:57:28,331 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:57:28,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:57:28,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:57:28,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:57:28,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:57:28,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:57:28,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:57:28,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:57:28,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:57:28,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:57:28,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:57:28,334 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:57:28,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:57:28,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:57:28,335 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_6c2d0344-d5bf-4144-b86e-7f536c376607/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-19 06:57:28,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:57:28,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:57:28,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:57:28,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:57:28,777 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:57:28,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-19 06:57:28,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/5e278ce68/a4c62c32056c428e9fb132d7c038628d/FLAG05de778e8 [2022-11-19 06:57:29,369 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:57:29,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-19 06:57:29,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/5e278ce68/a4c62c32056c428e9fb132d7c038628d/FLAG05de778e8 [2022-11-19 06:57:29,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/5e278ce68/a4c62c32056c428e9fb132d7c038628d [2022-11-19 06:57:29,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:57:29,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:57:29,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:57:29,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:57:29,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:57:29,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:29" (1/1) ... [2022-11-19 06:57:29,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b7f020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:29, skipping insertion in model container [2022-11-19 06:57:29,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:29" (1/1) ... [2022-11-19 06:57:29,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:57:29,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:57:30,031 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_6c2d0344-d5bf-4144-b86e-7f536c376607/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-19 06:57:30,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:57:30,077 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 06:57:30,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17c4c73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:30, skipping insertion in model container [2022-11-19 06:57:30,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:57:30,079 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 06:57:30,083 INFO L158 Benchmark]: Toolchain (without parser) took 384.17ms. Allocated memory is still 136.3MB. Free memory was 97.8MB in the beginning and 107.4MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:57:30,085 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory was 106.9MB in the beginning and 106.9MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:57:30,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.07ms. Allocated memory is still 136.3MB. Free memory was 97.7MB in the beginning and 107.4MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:57:30,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory was 106.9MB in the beginning and 106.9MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.07ms. Allocated memory is still 136.3MB. Free memory was 97.7MB in the beginning and 107.4MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 175]: 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_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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_6c2d0344-d5bf-4144-b86e-7f536c376607/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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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 06:57:32,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:57:32,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:57:32,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:57:32,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:57:32,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:57:32,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:57:32,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:57:32,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:57:32,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:57:32,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:57:32,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:57:32,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:57:32,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:57:32,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:57:32,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:57:32,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:57:32,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:57:32,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:57:32,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:57:32,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:57:32,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:57:32,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:57:32,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:57:32,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:57:32,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:57:32,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:57:32,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:57:32,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:57:32,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:57:32,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:57:32,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:57:32,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:57:32,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:57:32,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:57:32,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:57:32,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:57:32,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:57:32,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:57:32,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:57:32,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:57:32,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 06:57:32,740 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:57:32,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:57:32,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:57:32,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:57:32,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:57:32,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:57:32,751 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:57:32,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:57:32,752 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:57:32,752 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:57:32,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:57:32,754 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:57:32,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:57:32,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:57:32,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:57:32,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:57:32,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:57:32,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:57:32,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:57:32,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:57:32,758 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:57:32,758 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:57:32,758 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:57:32,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:57:32,759 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:57:32,759 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:57:32,759 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:57:32,760 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:57:32,760 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:57:32,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:57:32,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:57:32,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:57:32,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:57:32,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:57:32,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:57:32,762 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:57:32,763 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:57:32,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:57:32,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:57:32,763 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_6c2d0344-d5bf-4144-b86e-7f536c376607/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-19 06:57:33,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:57:33,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:57:33,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:57:33,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:57:33,255 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:57:33,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-19 06:57:33,345 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/90bc37fee/cf3b59861d0b413983be232fb88a8d71/FLAG6071b27ea [2022-11-19 06:57:33,914 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:57:33,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-19 06:57:33,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/90bc37fee/cf3b59861d0b413983be232fb88a8d71/FLAG6071b27ea [2022-11-19 06:57:34,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/data/90bc37fee/cf3b59861d0b413983be232fb88a8d71 [2022-11-19 06:57:34,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:57:34,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:57:34,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:57:34,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:57:34,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:57:34,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7d9c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34, skipping insertion in model container [2022-11-19 06:57:34,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:57:34,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:57:34,532 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_6c2d0344-d5bf-4144-b86e-7f536c376607/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-19 06:57:34,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:57:34,605 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 06:57:34,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:57:34,670 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_6c2d0344-d5bf-4144-b86e-7f536c376607/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-19 06:57:34,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:57:34,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:57:34,748 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_6c2d0344-d5bf-4144-b86e-7f536c376607/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-19 06:57:34,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:57:34,793 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:57:34,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34 WrapperNode [2022-11-19 06:57:34,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:57:34,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:57:34,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:57:34,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:57:34,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,924 INFO L138 Inliner]: procedures = 31, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 367 [2022-11-19 06:57:34,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:57:34,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:57:34,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:57:34,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:57:34,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:34,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:35,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:35,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:35,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:35,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:57:35,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:57:35,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:57:35,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:57:35,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (1/1) ... [2022-11-19 06:57:35,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:57:35,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:57:35,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:57:35,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:57:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:57:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 06:57:35,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 06:57:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 06:57:35,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 06:57:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 06:57:35,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 06:57:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-19 06:57:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-19 06:57:35,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-19 06:57:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-19 06:57:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-19 06:57:35,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-19 06:57:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 06:57:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 06:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:57:35,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 06:57:35,164 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 06:57:35,460 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:57:35,462 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:57:36,695 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:57:37,131 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:57:37,131 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-19 06:57:37,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:37 BoogieIcfgContainer [2022-11-19 06:57:37,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:57:37,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:57:37,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:57:37,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:57:37,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:57:34" (1/3) ... [2022-11-19 06:57:37,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41449bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:57:37, skipping insertion in model container [2022-11-19 06:57:37,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:34" (2/3) ... [2022-11-19 06:57:37,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41449bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:57:37, skipping insertion in model container [2022-11-19 06:57:37,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:37" (3/3) ... [2022-11-19 06:57:37,161 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-11-19 06:57:37,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:57:37,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-19 06:57:37,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:57:37,450 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-19 06:57:37,520 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:57:37,543 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 340 transitions, 752 flow [2022-11-19 06:57:37,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 340 transitions, 752 flow [2022-11-19 06:57:37,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 340 transitions, 752 flow [2022-11-19 06:57:37,782 INFO L130 PetriNetUnfolder]: 21/290 cut-off events. [2022-11-19 06:57:37,783 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-19 06:57:37,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 290 events. 21/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 459 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 241. Up to 3 conditions per place. [2022-11-19 06:57:37,802 INFO L119 LiptonReduction]: Number of co-enabled transitions 13600 [2022-11-19 06:58:28,986 INFO L134 LiptonReduction]: Checked pairs total: 58215 [2022-11-19 06:58:28,987 INFO L136 LiptonReduction]: Total number of compositions: 310 [2022-11-19 06:58:29,011 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 117 transitions, 306 flow [2022-11-19 06:58:32,763 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 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 06:58:32,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:58:32,807 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;@6e2b8bd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:58:32,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-11-19 06:58:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 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 06:58:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:58:33,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:33,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:58:33,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:58:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash 52636, now seen corresponding path program 1 times [2022-11-19 06:58:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:33,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682475797] [2022-11-19 06:58:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:33,178 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 06:58:33,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:33,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:33,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:33,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:58:33,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:33,516 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-19 06:58:33,517 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 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-19 06:58:33,591 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 06:58:33,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:33,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:33,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682475797] [2022-11-19 06:58:33,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682475797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:33,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:33,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:58:33,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16534579] [2022-11-19 06:58:33,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:33,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:33,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:33,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:33,746 INFO L87 Difference]: Start difference. First operand has 58810 states, 53598 states have (on average 5.914045300197769) internal successors, (316981), 58809 states have internal predecessors, (316981), 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 06:58:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:35,954 INFO L93 Difference]: Finished difference Result 45842 states and 239941 transitions. [2022-11-19 06:58:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:35,964 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 06:58:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:37,023 INFO L225 Difference]: With dead ends: 45842 [2022-11-19 06:58:37,023 INFO L226 Difference]: Without dead ends: 45842 [2022-11-19 06:58:37,024 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 06:58:37,028 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:37,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 36 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:58:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45842 states. [2022-11-19 06:58:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45842 to 44884. [2022-11-19 06:58:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41274 states have (on average 5.741507971119833) internal successors, (236975), 44883 states have internal predecessors, (236975), 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 06:58:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236975 transitions. [2022-11-19 06:58:40,456 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236975 transitions. Word has length 2 [2022-11-19 06:58:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:40,457 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236975 transitions. [2022-11-19 06:58:40,458 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 06:58:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236975 transitions. [2022-11-19 06:58:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:58:40,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:40,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:58:40,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:40,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:40,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:58:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash 52637, now seen corresponding path program 1 times [2022-11-19 06:58:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:40,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432589955] [2022-11-19 06:58:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:40,673 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 06:58:40,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:40,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:40,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:40,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:58:40,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:40,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:40,890 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:58:40,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-19 06:58:40,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:58:40,987 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 06:58:40,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:40,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:40,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432589955] [2022-11-19 06:58:40,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432589955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:40,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:40,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:58:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648376853] [2022-11-19 06:58:40,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:40,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:40,992 INFO L87 Difference]: Start difference. First operand 44884 states and 236975 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 06:58:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:41,957 INFO L93 Difference]: Finished difference Result 44885 states and 236979 transitions. [2022-11-19 06:58:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:41,967 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 06:58:41,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:43,062 INFO L225 Difference]: With dead ends: 44885 [2022-11-19 06:58:43,063 INFO L226 Difference]: Without dead ends: 44885 [2022-11-19 06:58:43,064 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 06:58:43,084 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:43,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 75 Unchecked, 0.3s Time] [2022-11-19 06:58:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44885 states. [2022-11-19 06:58:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44885 to 44885. [2022-11-19 06:58:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44885 states, 41275 states have (on average 5.741465778316172) internal successors, (236979), 44884 states have internal predecessors, (236979), 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 06:58:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44885 states to 44885 states and 236979 transitions. [2022-11-19 06:58:46,177 INFO L78 Accepts]: Start accepts. Automaton has 44885 states and 236979 transitions. Word has length 2 [2022-11-19 06:58:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:46,178 INFO L495 AbstractCegarLoop]: Abstraction has 44885 states and 236979 transitions. [2022-11-19 06:58:46,178 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 06:58:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 44885 states and 236979 transitions. [2022-11-19 06:58:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:58:46,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:46,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:58:46,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:46,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:58:46,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash 52414, now seen corresponding path program 1 times [2022-11-19 06:58:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:46,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446526575] [2022-11-19 06:58:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:46,392 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 06:58:46,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:46,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:46,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:46,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:58:46,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:46,560 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-19 06:58:46,561 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-19 06:58:46,585 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 06:58:46,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:46,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:46,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446526575] [2022-11-19 06:58:46,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446526575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:46,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:46,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:58:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118752138] [2022-11-19 06:58:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:46,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:46,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:46,588 INFO L87 Difference]: Start difference. First operand 44885 states and 236979 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 06:58:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:48,362 INFO L93 Difference]: Finished difference Result 44884 states and 236977 transitions. [2022-11-19 06:58:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:48,363 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 06:58:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:49,054 INFO L225 Difference]: With dead ends: 44884 [2022-11-19 06:58:49,055 INFO L226 Difference]: Without dead ends: 44884 [2022-11-19 06:58:49,055 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 06:58:49,067 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:49,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 36 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:58:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44884 states. [2022-11-19 06:58:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44884 to 44884. [2022-11-19 06:58:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41275 states have (on average 5.7414173228346455) internal successors, (236977), 44883 states have internal predecessors, (236977), 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 06:58:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236977 transitions. [2022-11-19 06:58:51,502 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236977 transitions. Word has length 2 [2022-11-19 06:58:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:51,503 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236977 transitions. [2022-11-19 06:58:51,503 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 06:58:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236977 transitions. [2022-11-19 06:58:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:58:51,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:51,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:58:51,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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)] Ended with exit code 0 [2022-11-19 06:58:51,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:51,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:58:51,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash 52415, now seen corresponding path program 1 times [2022-11-19 06:58:51,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:51,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551803585] [2022-11-19 06:58:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:51,706 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 06:58:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:51,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:51,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 (5)] Waiting until timeout for monitored process [2022-11-19 06:58:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:51,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:58:51,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:51,917 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:58:51,917 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:58:51,950 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 06:58:51,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:51,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:51,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551803585] [2022-11-19 06:58:51,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551803585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:51,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:51,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:58:51,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735343278] [2022-11-19 06:58:51,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:51,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:51,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:51,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:51,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:51,952 INFO L87 Difference]: Start difference. First operand 44884 states and 236977 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 06:58:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:53,949 INFO L93 Difference]: Finished difference Result 44894 states and 236997 transitions. [2022-11-19 06:58:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:53,950 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 06:58:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:54,292 INFO L225 Difference]: With dead ends: 44894 [2022-11-19 06:58:54,292 INFO L226 Difference]: Without dead ends: 44894 [2022-11-19 06:58:54,292 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 06:58:54,293 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:54,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 50 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 06:58:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44894 states. [2022-11-19 06:58:56,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44894 to 44884. [2022-11-19 06:58:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 41275 states have (on average 5.7413930950938825) internal successors, (236976), 44883 states have internal predecessors, (236976), 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 06:58:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 236976 transitions. [2022-11-19 06:58:57,124 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 236976 transitions. Word has length 2 [2022-11-19 06:58:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:57,124 INFO L495 AbstractCegarLoop]: Abstraction has 44884 states and 236976 transitions. [2022-11-19 06:58:57,124 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 06:58:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 236976 transitions. [2022-11-19 06:58:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:58:57,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:57,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:58:57,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:57,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:57,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:58:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1632459, now seen corresponding path program 1 times [2022-11-19 06:58:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:57,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222993704] [2022-11-19 06:58:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:57,327 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 06:58:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:57,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:58:57,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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)] Waiting until timeout for monitored process [2022-11-19 06:58:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:57,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:58:57,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:57,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:57,556 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-19 06:58:57,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-19 06:58:57,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:58:57,756 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 06:58:57,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:57,983 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 06:58:57,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:57,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222993704] [2022-11-19 06:58:57,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222993704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:57,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [283345257] [2022-11-19 06:58:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:57,984 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:58:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:58:57,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:58:58,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 06:58:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:58,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:58:58,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:58,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:58,328 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:58:58,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-19 06:58:58,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:58:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:58:58,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:58,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [283345257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:58,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:58:58,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2, 2] total 5 [2022-11-19 06:58:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31849792] [2022-11-19 06:58:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:58,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:58,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:58:58,439 INFO L87 Difference]: Start difference. First operand 44884 states and 236976 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:58:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:59,217 INFO L93 Difference]: Finished difference Result 44883 states and 236975 transitions. [2022-11-19 06:58:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:58:59,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 06:58:59,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:00,375 INFO L225 Difference]: With dead ends: 44883 [2022-11-19 06:59:00,390 INFO L226 Difference]: Without dead ends: 44883 [2022-11-19 06:59:00,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:59:00,391 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:00,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2022-11-19 06:59:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44883 states. [2022-11-19 06:59:02,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44883 to 44883. [2022-11-19 06:59:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44883 states, 41275 states have (on average 5.74136886735312) internal successors, (236975), 44882 states have internal predecessors, (236975), 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 06:59:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44883 states to 44883 states and 236975 transitions. [2022-11-19 06:59:02,593 INFO L78 Accepts]: Start accepts. Automaton has 44883 states and 236975 transitions. Word has length 3 [2022-11-19 06:59:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:02,593 INFO L495 AbstractCegarLoop]: Abstraction has 44883 states and 236975 transitions. [2022-11-19 06:59:02,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 44883 states and 236975 transitions. [2022-11-19 06:59:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:59:02,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:02,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:59:02,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:02,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:02,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:02,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:59:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1632237, now seen corresponding path program 1 times [2022-11-19 06:59:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:02,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533023898] [2022-11-19 06:59:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:02,996 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 06:59:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:02,998 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:03,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:03,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:59:03,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:03,201 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:59:03,202 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:59:03,283 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 06:59:03,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:03,558 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 06:59:03,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:03,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533023898] [2022-11-19 06:59:03,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533023898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:03,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [142089644] [2022-11-19 06:59:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:03,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:03,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:59:03,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:59:03,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-19 06:59:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:03,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:59:03,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:03,787 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:59:03,787 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:59:03,819 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 06:59:03,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:03,899 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 06:59:03,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [142089644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:03,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519798485] [2022-11-19 06:59:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:03,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:59:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:03,903 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:59:03,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 06:59:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:04,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:59:04,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:04,079 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:59:04,080 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:59:04,141 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 06:59:04,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:04,282 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 06:59:04,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519798485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:04,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:59:04,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2022-11-19 06:59:04,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391932375] [2022-11-19 06:59:04,283 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:59:04,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:59:04,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:04,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:59:04,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:59:04,284 INFO L87 Difference]: Start difference. First operand 44883 states and 236975 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 06:59:07,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:07,371 INFO L93 Difference]: Finished difference Result 44928 states and 237072 transitions. [2022-11-19 06:59:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:59:07,372 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 06:59:07,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:07,771 INFO L225 Difference]: With dead ends: 44928 [2022-11-19 06:59:07,772 INFO L226 Difference]: Without dead ends: 44928 [2022-11-19 06:59:07,772 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 06:59:07,773 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 61 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:07,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 110 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 06:59:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44928 states. [2022-11-19 06:59:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44928 to 44886. [2022-11-19 06:59:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44886 states, 41278 states have (on average 5.7410969523717235) internal successors, (236981), 44885 states have internal predecessors, (236981), 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 06:59:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44886 states to 44886 states and 236981 transitions. [2022-11-19 06:59:09,811 INFO L78 Accepts]: Start accepts. Automaton has 44886 states and 236981 transitions. Word has length 3 [2022-11-19 06:59:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:09,811 INFO L495 AbstractCegarLoop]: Abstraction has 44886 states and 236981 transitions. [2022-11-19 06:59:09,811 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 06:59:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 44886 states and 236981 transitions. [2022-11-19 06:59:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:59:09,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:09,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:59:09,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-19 06:59:10,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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)] Ended with exit code 0 [2022-11-19 06:59:10,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:10,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:59:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1404341827, now seen corresponding path program 1 times [2022-11-19 06:59:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:10,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444625927] [2022-11-19 06:59:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:10,416 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 06:59:10,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:10,417 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:10,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 (11)] Waiting until timeout for monitored process [2022-11-19 06:59:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:10,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:59:10,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:10,563 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-19 06:59:10,564 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 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-19 06:59:10,601 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 06:59:10,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:59:10,601 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444625927] [2022-11-19 06:59:10,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444625927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:10,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:10,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:59:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387409236] [2022-11-19 06:59:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:10,603 INFO L87 Difference]: Start difference. First operand 44886 states and 236981 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:59:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:12,449 INFO L93 Difference]: Finished difference Result 45954 states and 240923 transitions. [2022-11-19 06:59:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:12,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:59:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:12,782 INFO L225 Difference]: With dead ends: 45954 [2022-11-19 06:59:12,782 INFO L226 Difference]: Without dead ends: 45954 [2022-11-19 06:59:12,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 06:59:12,783 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:12,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 35 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:59:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45954 states. [2022-11-19 06:59:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45954 to 45123. [2022-11-19 06:59:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45123 states, 41555 states have (on average 5.730525809168571) internal successors, (238132), 45122 states have internal predecessors, (238132), 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 06:59:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45123 states to 45123 states and 238132 transitions. [2022-11-19 06:59:14,766 INFO L78 Accepts]: Start accepts. Automaton has 45123 states and 238132 transitions. Word has length 6 [2022-11-19 06:59:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:14,766 INFO L495 AbstractCegarLoop]: Abstraction has 45123 states and 238132 transitions. [2022-11-19 06:59:14,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:59:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 45123 states and 238132 transitions. [2022-11-19 06:59:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:59:14,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:14,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:59:14,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:14,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:14,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:59:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1404341828, now seen corresponding path program 1 times [2022-11-19 06:59:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:14,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031793216] [2022-11-19 06:59:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:14,983 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 06:59:14,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:14,984 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:14,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:15,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:59:15,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:15,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:15,166 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-19 06:59:15,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-19 06:59:15,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-19 06:59:15,228 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 06:59:15,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:59:15,229 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:15,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031793216] [2022-11-19 06:59:15,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031793216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:15,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:15,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:59:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468158827] [2022-11-19 06:59:15,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:15,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:15,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:15,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:15,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:15,231 INFO L87 Difference]: Start difference. First operand 45123 states and 238132 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:59:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:16,911 INFO L93 Difference]: Finished difference Result 44883 states and 237212 transitions. [2022-11-19 06:59:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:59:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:17,338 INFO L225 Difference]: With dead ends: 44883 [2022-11-19 06:59:17,338 INFO L226 Difference]: Without dead ends: 44883 [2022-11-19 06:59:17,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 06:59:17,340 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:17,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 17 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:59:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44883 states. [2022-11-19 06:59:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44883 to 44883. [2022-11-19 06:59:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44883 states, 41397 states have (on average 5.730173684083388) internal successors, (237212), 44882 states have internal predecessors, (237212), 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 06:59:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44883 states to 44883 states and 237212 transitions. [2022-11-19 06:59:19,596 INFO L78 Accepts]: Start accepts. Automaton has 44883 states and 237212 transitions. Word has length 6 [2022-11-19 06:59:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:19,596 INFO L495 AbstractCegarLoop]: Abstraction has 44883 states and 237212 transitions. [2022-11-19 06:59:19,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:59:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 44883 states and 237212 transitions. [2022-11-19 06:59:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:59:19,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:19,597 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-19 06:59:19,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:19,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:19,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-11-19 06:59:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1388652607, now seen corresponding path program 2 times [2022-11-19 06:59:19,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:19,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38181606] [2022-11-19 06:59:19,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:59:19,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:59:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:19,801 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 06:59:19,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/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 (13)] Waiting until timeout for monitored process [2022-11-19 06:59:19,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:59:19,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:59:19,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:59:19,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:20,021 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:59:20,021 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:59:20,237 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 06:59:20,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:21,191 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 06:59:21,192 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38181606] [2022-11-19 06:59:21,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38181606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1912817556] [2022-11-19 06:59:21,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:59:21,193 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:21,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:59:21,195 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:59:21,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 06:59:21,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:59:21,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:59:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:59:21,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:21,612 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:59:21,613 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:59:21,761 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 06:59:21,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:23,078 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 06:59:23,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1912817556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:23,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556299454] [2022-11-19 06:59:23,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:59:23,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:59:23,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:23,082 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:59:23,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d0344-d5bf-4144-b86e-7f536c376607/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 06:59:23,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:59:23,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:59:23,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:59:23,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:23,349 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:59:23,350 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:59:23,488 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 06:59:23,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:23,753 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 06:59:23,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556299454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:23,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:59:23,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 15 [2022-11-19 06:59:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330570304] [2022-11-19 06:59:23,754 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:59:23,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 06:59:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:23,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 06:59:23,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:59:23,756 INFO L87 Difference]: Start difference. First operand 44883 states and 237212 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)