./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9 --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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- 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-6b4ec56 [2022-11-20 20:04:07,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:04:07,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:04:07,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:04:07,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:04:07,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:04:07,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:04:07,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:04:07,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:04:07,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:04:07,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:04:07,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:04:07,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:04:07,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:04:07,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:04:07,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:04:07,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:04:07,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:04:07,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:04:07,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:04:07,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:04:07,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:04:07,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:04:07,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:04:07,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:04:07,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:04:07,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:04:07,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:04:07,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:04:07,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:04:07,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:04:07,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:04:07,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:04:07,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:04:07,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:04:07,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:04:07,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:04:07,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:04:07,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:04:07,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:04:07,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:04:07,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 20:04:07,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:04:07,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:04:07,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:04:07,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:04:07,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:04:07,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:04:07,322 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:04:07,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:04:07,322 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:04:07,322 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:04:07,322 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:04:07,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:04:07,323 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:04:07,323 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:04:07,323 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:04:07,323 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:04:07,324 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:04:07,324 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:04:07,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 20:04:07,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 20:04:07,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:04:07,325 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:04:07,325 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:04:07,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:04:07,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:04:07,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:04:07,326 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 20:04:07,326 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 20:04:07,328 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 20:04:07,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:04:07,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:04:07,329 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:04:07,329 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:04:07,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:04:07,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:04:07,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:04:07,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:04:07,331 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:04:07,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:04:07,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:04:07,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:04:07,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:04:07,332 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_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2022-11-20 20:04:07,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:04:07,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:04:07,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:04:07,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:04:07,692 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:04:07,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-11-20 20:04:10,683 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:04:10,894 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:04:10,895 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-11-20 20:04:10,901 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data/1753db4f4/51d28201ec8a4615a91cb555128d2c24/FLAGc185d44cc [2022-11-20 20:04:10,917 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data/1753db4f4/51d28201ec8a4615a91cb555128d2c24 [2022-11-20 20:04:10,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:04:10,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:04:10,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:04:10,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:04:10,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:04:10,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:04:10" (1/1) ... [2022-11-20 20:04:10,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b311a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:10, skipping insertion in model container [2022-11-20 20:04:10,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:04:10" (1/1) ... [2022-11-20 20:04:10,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:04:10,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:04:11,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:04:11,199 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) [2022-11-20 20:04:11,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@650795c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:11, skipping insertion in model container [2022-11-20 20:04:11,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:04:11,201 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 20:04:11,203 INFO L158 Benchmark]: Toolchain (without parser) took 280.93ms. Allocated memory is still 165.7MB. Free memory was 134.6MB in the beginning and 132.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:04:11,204 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 93.5MB in the beginning and 93.4MB in the end (delta: 141.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:04:11,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.51ms. Allocated memory is still 165.7MB. Free memory was 134.6MB in the beginning and 132.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:04:11,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory was 93.5MB in the beginning and 93.4MB in the end (delta: 141.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.51ms. Allocated memory is still 165.7MB. Free memory was 134.6MB in the beginning and 132.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: 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_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9 --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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- 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-6b4ec56 [2022-11-20 20:04:13,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:04:13,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:04:13,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:04:13,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:04:13,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:04:13,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:04:13,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:04:13,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:04:13,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:04:13,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:04:13,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:04:13,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:04:13,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:04:13,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:04:13,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:04:13,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:04:13,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:04:13,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:04:13,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:04:13,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:04:13,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:04:13,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:04:13,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:04:13,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:04:13,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:04:13,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:04:13,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:04:13,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:04:13,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:04:13,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:04:13,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:04:13,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:04:13,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:04:13,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:04:13,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:04:13,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:04:13,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:04:13,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:04:13,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:04:13,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:04:13,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-20 20:04:13,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:04:13,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:04:13,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:04:13,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:04:13,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:04:13,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:04:13,410 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:04:13,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:04:13,410 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:04:13,410 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:04:13,411 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:04:13,412 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:04:13,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 20:04:13,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 20:04:13,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:04:13,413 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:04:13,413 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:04:13,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:04:13,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:04:13,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:04:13,414 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 20:04:13,414 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 20:04:13,414 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 20:04:13,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:04:13,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:04:13,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:04:13,415 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:04:13,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:04:13,416 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:04:13,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:04:13,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:04:13,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:04:13,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:04:13,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:04:13,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:04:13,417 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:04:13,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:04:13,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:04:13,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:04:13,418 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_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2022-11-20 20:04:13,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:04:13,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:04:13,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:04:13,814 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:04:13,818 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:04:13,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-11-20 20:04:16,977 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:04:17,203 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:04:17,204 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-11-20 20:04:17,213 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data/4ce790562/b6e72227f3da4d11a20f201ca4c924ab/FLAG793e044ac [2022-11-20 20:04:17,227 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/data/4ce790562/b6e72227f3da4d11a20f201ca4c924ab [2022-11-20 20:04:17,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:04:17,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:04:17,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:04:17,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:04:17,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:04:17,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b96a51f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17, skipping insertion in model container [2022-11-20 20:04:17,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:04:17,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:04:17,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:04:17,485 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 20:04:17,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:04:17,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:04:17,505 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:04:17,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:04:17,550 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:04:17,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17 WrapperNode [2022-11-20 20:04:17,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:04:17,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:04:17,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:04:17,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:04:17,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,606 INFO L138 Inliner]: procedures = 11, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2022-11-20 20:04:17,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:04:17,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:04:17,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:04:17,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:04:17,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:04:17,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:04:17,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:04:17,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:04:17,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (1/1) ... [2022-11-20 20:04:17,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:04:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:04:17,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:04:17,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:04:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:04:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:04:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:04:17,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:04:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:04:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:04:17,841 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:04:17,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:04:18,087 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:04:18,093 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:04:18,094 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:04:18,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:04:18 BoogieIcfgContainer [2022-11-20 20:04:18,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:04:18,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:04:18,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:04:18,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:04:18,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:04:17" (1/3) ... [2022-11-20 20:04:18,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1ee4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:04:18, skipping insertion in model container [2022-11-20 20:04:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:17" (2/3) ... [2022-11-20 20:04:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1ee4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:04:18, skipping insertion in model container [2022-11-20 20:04:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:04:18" (3/3) ... [2022-11-20 20:04:18,104 INFO L112 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2022-11-20 20:04:18,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:04:18,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 20:04:18,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:04:18,196 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;@58402d11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:04:18,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 20:04:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:04:18,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:18,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:04:18,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-20 20:04:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2022-11-20 20:04:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:04:18,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991056830] [2022-11-20 20:04:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:18,228 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 [2022-11-20 20:04:18,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:04:18,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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) [2022-11-20 20:04:18,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:18,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:04:18,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:18,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 20:04:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:18,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:04:18,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:04:18,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991056830] [2022-11-20 20:04:18,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991056830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:18,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:18,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:04:18,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731631120] [2022-11-20 20:04:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:18,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:04:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:04:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:04:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:18,460 INFO L87 Difference]: Start difference. First operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 20:04:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:18,496 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-11-20 20:04:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:04:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-20 20:04:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:18,506 INFO L225 Difference]: With dead ends: 12 [2022-11-20 20:04:18,506 INFO L226 Difference]: Without dead ends: 10 [2022-11-20 20:04:18,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:18,512 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:18,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:04:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-20 20:04:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-20 20:04:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-20 20:04:18,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2022-11-20 20:04:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:18,543 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-20 20:04:18,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 20:04:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-20 20:04:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:04:18,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:18,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:04:18,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:18,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:04:18,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-20 20:04:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-20 20:04:18,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:04:18,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839773235] [2022-11-20 20:04:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:18,761 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 [2022-11-20 20:04:18,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:04:18,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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) [2022-11-20 20:04:18,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:18,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:04:18,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:18,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:04:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:18,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:04:18,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:04:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839773235] [2022-11-20 20:04:18,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839773235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:18,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:18,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:04:18,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753647955] [2022-11-20 20:04:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:18,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:04:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:04:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:04:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:18,955 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 20:04:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:19,002 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-11-20 20:04:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:04:19,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-20 20:04:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:19,003 INFO L225 Difference]: With dead ends: 16 [2022-11-20 20:04:19,004 INFO L226 Difference]: Without dead ends: 16 [2022-11-20 20:04:19,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:04:19,005 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:19,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:04:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-20 20:04:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2022-11-20 20:04:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-20 20:04:19,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2022-11-20 20:04:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:19,017 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-20 20:04:19,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 20:04:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-20 20:04:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 20:04:19,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:19,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:04:19,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:19,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:04:19,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-20 20:04:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2022-11-20 20:04:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:04:19,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685226512] [2022-11-20 20:04:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:19,233 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 [2022-11-20 20:04:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:04:19,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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) [2022-11-20 20:04:19,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:19,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:04:19,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:19,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:04:19,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-11-20 20:04:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:19,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:04:19,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:04:19,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685226512] [2022-11-20 20:04:19,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685226512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:19,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:19,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:04:19,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982469082] [2022-11-20 20:04:19,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:19,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:04:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:04:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:04:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:04:19,402 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:19,456 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-20 20:04:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:04:19,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 20:04:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:19,458 INFO L225 Difference]: With dead ends: 13 [2022-11-20 20:04:19,458 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 20:04:19,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:04:19,460 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:19,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-11-20 20:04:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 20:04:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 20:04:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-20 20:04:19,464 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-11-20 20:04:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:19,465 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-20 20:04:19,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-20 20:04:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 20:04:19,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:19,466 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-20 20:04:19,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:04:19,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:04:19,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-20 20:04:19,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1810603474, now seen corresponding path program 1 times [2022-11-20 20:04:19,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:04:19,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056878789] [2022-11-20 20:04:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:19,679 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 [2022-11-20 20:04:19,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:04:19,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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) [2022-11-20 20:04:19,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:19,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 20:04:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:19,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:04:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:19,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:04:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:20,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:04:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056878789] [2022-11-20 20:04:20,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056878789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:04:20,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [615001424] [2022-11-20 20:04:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:20,187 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:04:20,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:04:20,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:04:20,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-20 20:04:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:20,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 20:04:20,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:20,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:04:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:20,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:04:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:20,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [615001424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:04:20,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377968479] [2022-11-20 20:04:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:20,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:04:20,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:04:20,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:04:20,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:04:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:20,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 20:04:20,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:20,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:04:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:20,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:04:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:20,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377968479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:04:20,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:04:20,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 5 [2022-11-20 20:04:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438421866] [2022-11-20 20:04:20,748 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:04:20,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:04:20,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:04:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:04:20,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:04:20,749 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:20,819 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-20 20:04:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:04:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 20:04:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:20,820 INFO L225 Difference]: With dead ends: 22 [2022-11-20 20:04:20,820 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 20:04:20,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:04:20,822 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:20,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:04:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 20:04:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2022-11-20 20:04:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-20 20:04:20,825 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2022-11-20 20:04:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:20,826 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-20 20:04:20,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-20 20:04:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:04:20,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:20,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 20:04:20,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:04:21,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 20:04:21,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:21,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:04:21,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-20 20:04:21,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:21,430 INFO L85 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2022-11-20 20:04:21,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:04:21,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243441824] [2022-11-20 20:04:21,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:21,431 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 [2022-11-20 20:04:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:04:21,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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) [2022-11-20 20:04:21,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 20:04:21,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:21,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:04:21,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-11-20 20:04:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:21,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:04:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:21,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:04:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243441824] [2022-11-20 20:04:21,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243441824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:04:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [46300525] [2022-11-20 20:04:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:21,799 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:04:21,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:04:21,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:04:21,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-20 20:04:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:21,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 20:04:21,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:22,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:04:22,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-11-20 20:04:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:22,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:04:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:22,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [46300525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:04:22,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596125144] [2022-11-20 20:04:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:04:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:04:22,103 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:04:22,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 20:04:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:22,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 20:04:22,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:04:22,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:04:22,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2022-11-20 20:04:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:22,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:04:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:04:22,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596125144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:04:22,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:04:22,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 13 [2022-11-20 20:04:22,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875345407] [2022-11-20 20:04:22,746 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:04:22,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:04:22,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:04:22,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:04:22,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:04:22,748 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2022-11-20 20:04:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:23,082 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-20 20:04:23,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:04:23,085 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 10 [2022-11-20 20:04:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:23,086 INFO L225 Difference]: With dead ends: 24 [2022-11-20 20:04:23,086 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 20:04:23,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:04:23,088 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:23,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 9 Unchecked, 0.2s Time] [2022-11-20 20:04:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 20:04:23,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2022-11-20 20:04:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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) [2022-11-20 20:04:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-20 20:04:23,091 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2022-11-20 20:04:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:23,092 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-20 20:04:23,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2022-11-20 20:04:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-20 20:04:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:04:23,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:23,093 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2022-11-20 20:04:23,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:04:23,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 20:04:23,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-11-20 20:04:23,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 20:04:23,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-11-20 20:04:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 2 times [2022-11-20 20:04:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:04:23,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747975296] [2022-11-20 20:04:23,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:04:23,696 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 [2022-11-20 20:04:23,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:04:23,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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) [2022-11-20 20:04:23,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:23,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:04:23,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 20:04:23,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:04:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:04:23,815 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-20 20:04:23,815 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:04:23,817 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2022-11-20 20:04:23,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2022-11-20 20:04:23,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2022-11-20 20:04:23,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -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 [2022-11-20 20:04:24,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:04:24,022 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-20 20:04:24,026 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:04:24,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:04:24 BoogieIcfgContainer [2022-11-20 20:04:24,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:04:24,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:04:24,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:04:24,045 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:04:24,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:04:18" (3/4) ... [2022-11-20 20:04:24,047 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 20:04:24,081 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:04:24,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:04:24,082 INFO L158 Benchmark]: Toolchain (without parser) took 6850.54ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 68.8MB in the beginning and 79.4MB in the end (delta: -10.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-11-20 20:04:24,082 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 68.4MB in the beginning and 68.2MB in the end (delta: 169.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:04:24,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.60ms. Allocated memory is still 90.2MB. Free memory was 68.5MB in the beginning and 57.5MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:04:24,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.38ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 55.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:04:24,083 INFO L158 Benchmark]: Boogie Preprocessor took 45.30ms. Allocated memory is still 90.2MB. Free memory was 55.9MB in the beginning and 54.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:04:24,084 INFO L158 Benchmark]: RCFGBuilder took 440.97ms. Allocated memory is still 90.2MB. Free memory was 54.5MB in the beginning and 43.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:04:24,084 INFO L158 Benchmark]: TraceAbstraction took 5946.69ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 43.2MB in the beginning and 81.5MB in the end (delta: -38.3MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2022-11-20 20:04:24,085 INFO L158 Benchmark]: Witness Printer took 35.85ms. Allocated memory is still 127.9MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:04:24,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 68.4MB in the beginning and 68.2MB in the end (delta: 169.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.60ms. Allocated memory is still 90.2MB. Free memory was 68.5MB in the beginning and 57.5MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.38ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 55.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.30ms. Allocated memory is still 90.2MB. Free memory was 55.9MB in the beginning and 54.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.97ms. Allocated memory is still 90.2MB. Free memory was 54.5MB in the beginning and 43.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5946.69ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 43.2MB in the beginning and 81.5MB in the end (delta: -38.3MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. * Witness Printer took 35.85ms. Allocated memory is still 127.9MB. Free memory was 81.5MB in the beginning and 79.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; [L15] CALL areNatural((int*) numbers) [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 97 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 14 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 40 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 102 ConstructedInterpolants, 4 QuantifiedInterpolants, 1739 SizeOfPredicates, 54 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 0/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 20:04:24,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce7be0e5-88a3-40c8-b784-a81ca82d1661/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)