./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba --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 fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- 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-b5237d8 [2022-11-22 01:56:00,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:56:00,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:56:00,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:56:00,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:56:00,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:56:00,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:56:00,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:56:00,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:56:00,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:56:00,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:56:00,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:56:00,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:56:00,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:56:00,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:56:00,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:56:00,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:56:00,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:56:00,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:56:00,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:56:00,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:56:00,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:56:00,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:56:00,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:56:00,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:56:00,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:56:00,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:56:00,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:56:00,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:56:00,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:56:00,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:56:00,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:56:00,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:56:00,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:56:00,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:56:00,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:56:00,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:56:00,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:56:00,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:56:00,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:56:00,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:56:00,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 01:56:00,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:56:00,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:56:00,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:56:00,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:56:00,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:56:00,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:56:00,204 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:56:00,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:56:00,204 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:56:00,204 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:56:00,206 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:56:00,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:56:00,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:56:00,207 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:56:00,207 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:56:00,208 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:56:00,208 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:56:00,208 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:56:00,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:56:00,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:56:00,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:56:00,209 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:56:00,209 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:56:00,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:56:00,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:56:00,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:56:00,210 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:56:00,210 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:56:00,211 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:56:00,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:56:00,211 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:56:00,211 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:56:00,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:56:00,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:56:00,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:56:00,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:56:00,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:56:00,212 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:56:00,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:56:00,213 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:56:00,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:56:00,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:56:00,214 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_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-22 01:56:00,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:56:00,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:56:00,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:56:00,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:56:00,550 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:56:00,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-22 01:56:03,671 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:56:04,069 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:56:04,075 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-22 01:56:04,100 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data/014d73d41/de62c960a8624dc5a06b9bf502e754db/FLAGa2807f58c [2022-11-22 01:56:04,121 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data/014d73d41/de62c960a8624dc5a06b9bf502e754db [2022-11-22 01:56:04,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:56:04,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:56:04,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:56:04,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:56:04,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:56:04,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:56:04" (1/1) ... [2022-11-22 01:56:04,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d23af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:04, skipping insertion in model container [2022-11-22 01:56:04,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:56:04" (1/1) ... [2022-11-22 01:56:04,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:56:04,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:56:04,987 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-22 01:56:05,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:56:05,055 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) [2022-11-22 01:56:05,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@177687f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:05, skipping insertion in model container [2022-11-22 01:56:05,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:56:05,056 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-22 01:56:05,058 INFO L158 Benchmark]: Toolchain (without parser) took 931.44ms. Allocated memory is still 165.7MB. Free memory was 131.3MB in the beginning and 130.6MB in the end (delta: 729.9kB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 01:56:05,058 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:56:05,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 928.82ms. Allocated memory is still 165.7MB. Free memory was 130.9MB in the beginning and 130.6MB in the end (delta: 311.6kB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 01:56:05,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 928.82ms. Allocated memory is still 165.7MB. Free memory was 130.9MB in the beginning and 130.6MB in the end (delta: 311.6kB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1709]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba --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 fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- 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-b5237d8 [2022-11-22 01:56:07,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:56:07,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:56:07,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:56:07,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:56:07,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:56:07,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:56:07,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:56:07,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:56:07,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:56:07,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:56:07,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:56:07,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:56:07,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:56:07,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:56:07,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:56:07,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:56:07,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:56:07,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:56:07,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:56:07,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:56:07,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:56:07,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:56:07,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:56:07,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:56:07,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:56:07,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:56:07,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:56:07,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:56:07,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:56:07,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:56:07,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:56:07,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:56:07,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:56:07,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:56:07,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:56:07,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:56:07,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:56:07,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:56:07,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:56:07,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:56:07,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-22 01:56:07,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:56:07,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:56:07,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:56:07,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:56:07,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:56:07,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:56:07,445 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:56:07,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:56:07,446 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:56:07,446 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:56:07,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:56:07,446 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:56:07,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:56:07,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:56:07,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:56:07,448 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:56:07,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:56:07,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:56:07,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:56:07,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:56:07,450 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:56:07,450 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:56:07,451 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:56:07,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:56:07,451 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:56:07,451 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:56:07,452 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:56:07,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:56:07,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:56:07,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:56:07,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:56:07,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:56:07,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:56:07,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:56:07,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:56:07,455 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:56:07,455 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:56:07,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:56:07,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:56:07,456 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_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-22 01:56:07,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:56:07,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:56:07,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:56:07,839 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:56:07,839 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:56:07,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-22 01:56:11,175 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:56:11,604 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:56:11,605 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-22 01:56:11,644 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data/af30c9973/b8d7892ef7ac4a3391af6624736af73d/FLAGe788de0e4 [2022-11-22 01:56:11,660 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/data/af30c9973/b8d7892ef7ac4a3391af6624736af73d [2022-11-22 01:56:11,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:56:11,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:56:11,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:56:11,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:56:11,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:56:11,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:56:11" (1/1) ... [2022-11-22 01:56:11,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ea133b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:11, skipping insertion in model container [2022-11-22 01:56:11,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:56:11" (1/1) ... [2022-11-22 01:56:11,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:56:11,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:56:12,489 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-22 01:56:12,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:56:12,576 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-22 01:56:12,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:56:12,651 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-22 01:56:12,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:56:12,683 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:56:12,745 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-22 01:56:12,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:56:12,934 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:56:12,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12 WrapperNode [2022-11-22 01:56:12,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:56:12,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:56:12,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:56:12,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:56:12,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:12,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,000 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 131 [2022-11-22 01:56:13,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:56:13,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:56:13,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:56:13,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:56:13,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:56:13,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:56:13,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:56:13,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:56:13,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (1/1) ... [2022-11-22 01:56:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:56:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:13,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:56:13,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:56:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:56:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 01:56:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-22 01:56:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:56:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:56:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:56:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:56:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:56:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-22 01:56:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-22 01:56:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-22 01:56:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:56:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-22 01:56:13,169 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:56:13,584 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:56:13,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:56:14,250 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:56:14,258 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:56:14,258 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:56:14,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:56:14 BoogieIcfgContainer [2022-11-22 01:56:14,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:56:14,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:56:14,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:56:14,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:56:14,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:56:11" (1/3) ... [2022-11-22 01:56:14,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:56:14, skipping insertion in model container [2022-11-22 01:56:14,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:12" (2/3) ... [2022-11-22 01:56:14,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:56:14, skipping insertion in model container [2022-11-22 01:56:14,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:56:14" (3/3) ... [2022-11-22 01:56:14,275 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-11-22 01:56:14,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:56:14,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2022-11-22 01:56:14,297 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:56:14,447 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 01:56:14,490 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:56:14,504 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 241 transitions, 498 flow [2022-11-22 01:56:14,507 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 241 transitions, 498 flow [2022-11-22 01:56:14,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 241 transitions, 498 flow [2022-11-22 01:56:14,637 INFO L130 PetriNetUnfolder]: 10/298 cut-off events. [2022-11-22 01:56:14,637 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 01:56:14,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 298 events. 10/298 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 720 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 171. Up to 4 conditions per place. [2022-11-22 01:56:14,655 INFO L119 LiptonReduction]: Number of co-enabled transitions 6440 [2022-11-22 01:57:16,849 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 135 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:57:27,493 WARN L233 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 135 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:57:46,681 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 147 DAG size of output: 139 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:57:58,733 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 147 DAG size of output: 139 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:58:17,875 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 166 DAG size of output: 149 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:58:30,274 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 175 DAG size of output: 162 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:59:00,699 WARN L233 SmtUtils]: Spent 25.49s on a formula simplification. DAG size of input: 227 DAG size of output: 226 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:59:13,538 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification that was a NOOP. DAG size: 220 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 01:59:52,018 WARN L233 SmtUtils]: Spent 38.48s on a formula simplification. DAG size of input: 228 DAG size of output: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:00:09,353 WARN L233 SmtUtils]: Spent 17.33s on a formula simplification that was a NOOP. DAG size: 221 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:00:26,740 WARN L233 SmtUtils]: Spent 16.94s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:00:42,758 WARN L233 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:00:59,520 WARN L233 SmtUtils]: Spent 16.76s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:01:16,551 WARN L233 SmtUtils]: Spent 17.03s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:04:45,466 WARN L233 SmtUtils]: Spent 3.48m on a formula simplification. DAG size of input: 272 DAG size of output: 265 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:06:08,500 WARN L233 SmtUtils]: Spent 1.38m on a formula simplification that was a NOOP. DAG size: 256 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:09:38,532 WARN L233 SmtUtils]: Spent 3.50m on a formula simplification. DAG size of input: 273 DAG size of output: 269 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:11:10,074 WARN L233 SmtUtils]: Spent 1.53m on a formula simplification that was a NOOP. DAG size: 260 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:11:10,104 INFO L134 LiptonReduction]: Checked pairs total: 25241 [2022-11-22 02:11:10,105 INFO L136 LiptonReduction]: Total number of compositions: 279 [2022-11-22 02:11:10,114 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 85 transitions, 186 flow [2022-11-22 02:11:10,290 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3633 states, 2823 states have (on average 3.575274530641162) internal successors, (10093), 3632 states have internal predecessors, (10093), 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) [2022-11-22 02:11:10,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:11:10,313 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;@cb6056a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:11:10,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-11-22 02:11:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 3633 states, 2823 states have (on average 3.575274530641162) internal successors, (10093), 3632 states have internal predecessors, (10093), 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) [2022-11-22 02:11:10,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 02:11:10,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:10,330 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 02:11:10,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-22 02:11:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash 831, now seen corresponding path program 1 times [2022-11-22 02:11:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:10,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366432234] [2022-11-22 02:11:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:10,352 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 [2022-11-22 02:11:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:10,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:11:10,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:11:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 02:11:10,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:10,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:10,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:11:10,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366432234] [2022-11-22 02:11:10,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366432234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:10,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:10,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 02:11:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513438080] [2022-11-22 02:11:10,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:10,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:11:10,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:11:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:11:10,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:11:10,548 INFO L87 Difference]: Start difference. First operand has 3633 states, 2823 states have (on average 3.575274530641162) internal successors, (10093), 3632 states have internal predecessors, (10093), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-22 02:11:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:11,610 INFO L93 Difference]: Finished difference Result 3185 states and 8707 transitions. [2022-11-22 02:11:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:11:11,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-22 02:11:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:11,661 INFO L225 Difference]: With dead ends: 3185 [2022-11-22 02:11:11,661 INFO L226 Difference]: Without dead ends: 3179 [2022-11-22 02:11:11,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:11:11,672 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:11,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:11:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-11-22 02:11:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3179. [2022-11-22 02:11:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2534 states have (on average 3.430544593528019) internal successors, (8693), 3178 states have internal predecessors, (8693), 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) [2022-11-22 02:11:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 8693 transitions. [2022-11-22 02:11:11,888 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 8693 transitions. Word has length 1 [2022-11-22 02:11:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:11,888 INFO L495 AbstractCegarLoop]: Abstraction has 3179 states and 8693 transitions. [2022-11-22 02:11:11,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-22 02:11:11,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 8693 transitions. [2022-11-22 02:11:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 02:11:11,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:11,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 02:11:11,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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)] Ended with exit code 0 [2022-11-22 02:11:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:11:12,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-22 02:11:12,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:12,111 INFO L85 PathProgramCache]: Analyzing trace with hash 26991, now seen corresponding path program 1 times [2022-11-22 02:11:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:12,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897644439] [2022-11-22 02:11:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:12,112 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 [2022-11-22 02:11:12,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:12,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:11:12,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:11:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:12,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:11:12,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:12,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:12,356 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:11:12,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897644439] [2022-11-22 02:11:12,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897644439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:12,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:12,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:11:12,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296397908] [2022-11-22 02:11:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:12,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:12,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:11:12,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:12,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:12,360 INFO L87 Difference]: Start difference. First operand 3179 states and 8693 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:13,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:15,177 INFO L93 Difference]: Finished difference Result 3191 states and 8704 transitions. [2022-11-22 02:11:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:15,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-22 02:11:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:15,199 INFO L225 Difference]: With dead ends: 3191 [2022-11-22 02:11:15,199 INFO L226 Difference]: Without dead ends: 3191 [2022-11-22 02:11:15,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:15,200 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:15,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 02:11:15,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-11-22 02:11:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3177. [2022-11-22 02:11:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 2534 states have (on average 3.429755327545383) internal successors, (8691), 3176 states have internal predecessors, (8691), 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) [2022-11-22 02:11:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 8691 transitions. [2022-11-22 02:11:15,377 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 8691 transitions. Word has length 2 [2022-11-22 02:11:15,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:15,385 INFO L495 AbstractCegarLoop]: Abstraction has 3177 states and 8691 transitions. [2022-11-22 02:11:15,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 8691 transitions. [2022-11-22 02:11:15,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:11:15,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:15,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:11:15,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-22 02:11:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:11:15,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-22 02:11:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash 831212, now seen corresponding path program 1 times [2022-11-22 02:11:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:15,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443493641] [2022-11-22 02:11:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:15,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:11:15,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:15,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:11:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:11:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:15,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:11:15,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:16,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:11:16,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:11:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:16,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:16,088 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:11:16,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443493641] [2022-11-22 02:11:16,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443493641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:16,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:16,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:11:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637572313] [2022-11-22 02:11:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:16,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:11:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:16,090 INFO L87 Difference]: Start difference. First operand 3177 states and 8691 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:17,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:17,888 INFO L93 Difference]: Finished difference Result 3153 states and 8645 transitions. [2022-11-22 02:11:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:11:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:17,935 INFO L225 Difference]: With dead ends: 3153 [2022-11-22 02:11:17,935 INFO L226 Difference]: Without dead ends: 3153 [2022-11-22 02:11:17,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:17,936 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:17,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 8 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 02:11:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-11-22 02:11:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3153. [2022-11-22 02:11:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 2524 states have (on average 3.425118858954041) internal successors, (8645), 3152 states have internal predecessors, (8645), 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) [2022-11-22 02:11:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 8645 transitions. [2022-11-22 02:11:18,171 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 8645 transitions. Word has length 3 [2022-11-22 02:11:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:18,172 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 8645 transitions. [2022-11-22 02:11:18,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 8645 transitions. [2022-11-22 02:11:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:11:18,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:18,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:11:18,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:11:18,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:11:18,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-22 02:11:18,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash 831213, now seen corresponding path program 1 times [2022-11-22 02:11:18,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:18,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664822999] [2022-11-22 02:11:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:18,420 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 [2022-11-22 02:11:18,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:18,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:11:18,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:11:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:18,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:11:18,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:18,731 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-22 02:11:18,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-22 02:11:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:18,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:18,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:11:18,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664822999] [2022-11-22 02:11:18,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664822999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:18,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:18,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:11:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472446378] [2022-11-22 02:11:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:11:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:18,794 INFO L87 Difference]: Start difference. First operand 3153 states and 8645 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:20,397 INFO L93 Difference]: Finished difference Result 3141 states and 8611 transitions. [2022-11-22 02:11:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:20,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:11:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:20,411 INFO L225 Difference]: With dead ends: 3141 [2022-11-22 02:11:20,411 INFO L226 Difference]: Without dead ends: 3141 [2022-11-22 02:11:20,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:20,412 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:20,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 13 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 02:11:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2022-11-22 02:11:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 3129. [2022-11-22 02:11:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3129 states, 2514 states have (on average 3.4204455051710423) internal successors, (8599), 3128 states have internal predecessors, (8599), 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) [2022-11-22 02:11:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 8599 transitions. [2022-11-22 02:11:20,543 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 8599 transitions. Word has length 3 [2022-11-22 02:11:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:20,543 INFO L495 AbstractCegarLoop]: Abstraction has 3129 states and 8599 transitions. [2022-11-22 02:11:20,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 8599 transitions. [2022-11-22 02:11:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:11:20,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:20,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:11:20,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:11:20,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:11:20,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-22 02:11:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash 834780, now seen corresponding path program 1 times [2022-11-22 02:11:20,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:20,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460707300] [2022-11-22 02:11:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:20,761 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 [2022-11-22 02:11:20,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:20,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:11:20,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-22 02:11:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:20,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:11:20,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:20,968 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 [2022-11-22 02:11:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:21,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:21,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:11:21,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460707300] [2022-11-22 02:11:21,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460707300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:21,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:21,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:11:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274463796] [2022-11-22 02:11:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:21,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:11:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:21,009 INFO L87 Difference]: Start difference. First operand 3129 states and 8599 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:22,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:22,919 INFO L93 Difference]: Finished difference Result 2561 states and 6975 transitions. [2022-11-22 02:11:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:22,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-22 02:11:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:22,936 INFO L225 Difference]: With dead ends: 2561 [2022-11-22 02:11:22,936 INFO L226 Difference]: Without dead ends: 2561 [2022-11-22 02:11:22,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:22,937 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:22,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 19 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 02:11:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-11-22 02:11:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2556. [2022-11-22 02:11:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 2137 states have (on average 3.262517547964436) internal successors, (6972), 2555 states have internal predecessors, (6972), 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) [2022-11-22 02:11:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 6972 transitions. [2022-11-22 02:11:23,031 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 6972 transitions. Word has length 3 [2022-11-22 02:11:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:23,031 INFO L495 AbstractCegarLoop]: Abstraction has 2556 states and 6972 transitions. [2022-11-22 02:11:23,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:11:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 6972 transitions. [2022-11-22 02:11:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:11:23,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:23,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:11:23,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:11:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:11:23,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-22 02:11:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash 834672, now seen corresponding path program 1 times [2022-11-22 02:11:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:11:23,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701681717] [2022-11-22 02:11:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:23,249 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 [2022-11-22 02:11:23,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:11:23,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:11:23,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78181576-ab7e-4d26-a763-616883a85552/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-22 02:11:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:23,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:11:23,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:23,400 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 [2022-11-22 02:11:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:11:23,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:11:23,417 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:11:23,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701681717] [2022-11-22 02:11:23,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701681717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:23,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:23,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:11:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099332106] [2022-11-22 02:11:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:11:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:23,419 INFO L87 Difference]: Start difference. First operand 2556 states and 6972 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)