./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- 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-38b53e6 [2022-11-26 01:02:38,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:02:38,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:02:38,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:02:38,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:02:38,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:02:38,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:02:38,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:02:38,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:02:38,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:02:38,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:02:38,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:02:38,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:02:38,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:02:38,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:02:38,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:02:38,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:02:38,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:02:38,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:02:38,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:02:38,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:02:38,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:02:38,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:02:38,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:02:38,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:02:38,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:02:38,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:02:38,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:02:38,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:02:38,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:02:38,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:02:38,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:02:38,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:02:38,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:02:38,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:02:38,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:02:38,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:02:38,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:02:38,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:02:38,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:02:38,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:02:38,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 01:02:38,331 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:02:38,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:02:38,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:02:38,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:02:38,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:02:38,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:02:38,334 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:02:38,334 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:02:38,334 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:02:38,334 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:02:38,335 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:02:38,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:02:38,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:02:38,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:02:38,336 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:02:38,336 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:02:38,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:02:38,337 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:02:38,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 01:02:38,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 01:02:38,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:02:38,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:02:38,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:02:38,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:02:38,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:02:38,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:02:38,340 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 01:02:38,340 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 01:02:38,341 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 01:02:38,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:02:38,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:02:38,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:02:38,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:02:38,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:02:38,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:02:38,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:02:38,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:02:38,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:02:38,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:02:38,343 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:02:38,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:02:38,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:02:38,344 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2022-11-26 01:02:38,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:02:38,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:02:38,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:02:38,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:02:38,691 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:02:38,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2022-11-26 01:02:41,747 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:02:42,065 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:02:42,066 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2022-11-26 01:02:42,087 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data/1b873e79f/be7e60f09b8c407e88cdb98d7f1277ec/FLAG240abe55d [2022-11-26 01:02:42,101 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data/1b873e79f/be7e60f09b8c407e88cdb98d7f1277ec [2022-11-26 01:02:42,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:02:42,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:02:42,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:02:42,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:02:42,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:02:42,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:02:42" (1/1) ... [2022-11-26 01:02:42,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f68cded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:42, skipping insertion in model container [2022-11-26 01:02:42,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:02:42" (1/1) ... [2022-11-26 01:02:42,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:02:42,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:02:42,639 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2022-11-26 01:02:42,724 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:02:42,735 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2022-11-26 01:02:42,741 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2022-11-26 01:02:42,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:02:42,790 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) [2022-11-26 01:02:42,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1559e39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:42, skipping insertion in model container [2022-11-26 01:02:42,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:02:42,792 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-26 01:02:42,794 INFO L158 Benchmark]: Toolchain (without parser) took 687.04ms. Allocated memory is still 186.6MB. Free memory was 141.7MB in the beginning and 121.3MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 01:02:42,794 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory was 78.8MB in the beginning and 78.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:02:42,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 684.41ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 121.3MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 01:02:42,798 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 136.3MB. Free memory was 78.8MB in the beginning and 78.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 684.41ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 121.3MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- 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-38b53e6 [2022-11-26 01:02:44,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:02:44,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:02:45,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:02:45,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:02:45,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:02:45,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:02:45,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:02:45,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:02:45,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:02:45,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:02:45,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:02:45,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:02:45,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:02:45,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:02:45,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:02:45,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:02:45,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:02:45,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:02:45,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:02:45,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:02:45,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:02:45,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:02:45,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:02:45,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:02:45,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:02:45,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:02:45,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:02:45,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:02:45,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:02:45,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:02:45,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:02:45,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:02:45,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:02:45,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:02:45,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:02:45,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:02:45,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:02:45,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:02:45,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:02:45,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:02:45,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-26 01:02:45,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:02:45,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:02:45,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:02:45,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:02:45,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:02:45,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:02:45,118 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:02:45,118 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:02:45,119 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:02:45,119 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:02:45,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:02:45,119 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:02:45,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 01:02:45,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 01:02:45,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:02:45,121 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:02:45,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:02:45,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:02:45,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:02:45,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:02:45,122 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 01:02:45,123 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 01:02:45,123 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 01:02:45,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:02:45,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:02:45,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 01:02:45,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 01:02:45,124 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:02:45,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:02:45,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:02:45,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 01:02:45,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:02:45,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:02:45,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:02:45,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:02:45,126 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 01:02:45,127 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 01:02:45,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:02:45,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 01:02:45,127 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2022-11-26 01:02:45,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:02:45,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:02:45,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:02:45,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:02:45,557 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:02:45,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2022-11-26 01:02:48,650 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:02:49,021 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:02:49,022 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2022-11-26 01:02:49,037 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data/1cfd11056/a79d17089a4a49a2956b8e814af7077b/FLAG57859f9bb [2022-11-26 01:02:49,056 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/data/1cfd11056/a79d17089a4a49a2956b8e814af7077b [2022-11-26 01:02:49,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:02:49,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:02:49,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:02:49,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:02:49,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:02:49,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:02:49" (1/1) ... [2022-11-26 01:02:49,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14530963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:49, skipping insertion in model container [2022-11-26 01:02:49,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:02:49" (1/1) ... [2022-11-26 01:02:49,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:02:49,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:02:49,636 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2022-11-26 01:02:49,743 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:02:49,757 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2022-11-26 01:02:49,758 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2022-11-26 01:02:49,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:02:49,828 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-26 01:02:49,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:02:49,919 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2022-11-26 01:02:50,019 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:02:50,045 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2022-11-26 01:02:50,046 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2022-11-26 01:02:50,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:02:50,077 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:02:50,131 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2022-11-26 01:02:50,169 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:02:50,176 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2022-11-26 01:02:50,176 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_e2b23f92-3768-409f-8b7e-c17be8f2f839/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2022-11-26 01:02:50,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:02:50,221 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:02:50,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50 WrapperNode [2022-11-26 01:02:50,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:02:50,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:02:50,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:02:50,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:02:50,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,372 INFO L138 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1171 [2022-11-26 01:02:50,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:02:50,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:02:50,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:02:50,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:02:50,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,460 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:02:50,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:02:50,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:02:50,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:02:50,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (1/1) ... [2022-11-26 01:02:50,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:02:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:50,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:02:50,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:02:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-26 01:02:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-26 01:02:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-26 01:02:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-26 01:02:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 01:02:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:02:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 01:02:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:02:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-26 01:02:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 01:02:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:02:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-26 01:02:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 01:02:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:02:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:02:50,869 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:02:50,886 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:02:50,890 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-26 01:02:56,321 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:02:56,340 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:02:56,340 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-26 01:02:56,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:02:56 BoogieIcfgContainer [2022-11-26 01:02:56,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:02:56,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:02:56,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:02:56,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:02:56,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:02:49" (1/3) ... [2022-11-26 01:02:56,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3163ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:02:56, skipping insertion in model container [2022-11-26 01:02:56,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:02:50" (2/3) ... [2022-11-26 01:02:56,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3163ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:02:56, skipping insertion in model container [2022-11-26 01:02:56,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:02:56" (3/3) ... [2022-11-26 01:02:56,352 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-2.i [2022-11-26 01:02:56,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:02:56,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2022-11-26 01:02:56,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:02:56,451 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;@2eac1cd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:02:56,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2022-11-26 01:02:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 1248 states, 611 states have (on average 2.2667757774140753) internal successors, (1385), 1243 states have internal predecessors, (1385), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:02:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 01:02:56,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:56,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 01:02:56,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:02:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:56,472 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-26 01:02:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:02:56,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519071971] [2022-11-26 01:02:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:56,504 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 [2022-11-26 01:02:56,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:02:56,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:02:56,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:02:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:56,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:02:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:56,737 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 [2022-11-26 01:02:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:56,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:02:56,751 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:02:56,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519071971] [2022-11-26 01:02:56,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519071971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:02:56,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:02:56,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:02:56,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265546942] [2022-11-26 01:02:56,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:02:56,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:02:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:02:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:02:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:02:56,839 INFO L87 Difference]: Start difference. First operand has 1248 states, 611 states have (on average 2.2667757774140753) internal successors, (1385), 1243 states have internal predecessors, (1385), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:59,547 INFO L93 Difference]: Finished difference Result 1416 states and 1490 transitions. [2022-11-26 01:02:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:02:59,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 01:02:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:59,568 INFO L225 Difference]: With dead ends: 1416 [2022-11-26 01:02:59,568 INFO L226 Difference]: Without dead ends: 1414 [2022-11-26 01:02:59,569 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 [2022-11-26 01:02:59,572 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 1158 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 891 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-26 01:02:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-11-26 01:02:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1229. [2022-11-26 01:02:59,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 609 states have (on average 2.116584564860427) internal successors, (1289), 1224 states have internal predecessors, (1289), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:02:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1295 transitions. [2022-11-26 01:02:59,669 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1295 transitions. Word has length 3 [2022-11-26 01:02:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:59,670 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1295 transitions. [2022-11-26 01:02:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1295 transitions. [2022-11-26 01:02:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 01:02:59,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:59,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 01:02:59,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:02:59,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:02:59,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:02:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:59,886 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-26 01:02:59,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:02:59,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15804821] [2022-11-26 01:02:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:59,887 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 [2022-11-26 01:02:59,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:02:59,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:02:59,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:00,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:03:00,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:00,086 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 [2022-11-26 01:03:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:00,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:00,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15804821] [2022-11-26 01:03:00,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15804821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:00,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:00,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:03:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249977256] [2022-11-26 01:03:00,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:00,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:03:00,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:03:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:00,102 INFO L87 Difference]: Start difference. First operand 1229 states and 1295 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:04,432 INFO L93 Difference]: Finished difference Result 1818 states and 1924 transitions. [2022-11-26 01:03:04,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:03:04,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 01:03:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:04,439 INFO L225 Difference]: With dead ends: 1818 [2022-11-26 01:03:04,440 INFO L226 Difference]: Without dead ends: 1818 [2022-11-26 01:03:04,440 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 [2022-11-26 01:03:04,441 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 629 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:04,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1686 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-26 01:03:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-11-26 01:03:04,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1430. [2022-11-26 01:03:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 811 states have (on average 2.098643649815043) internal successors, (1702), 1425 states have internal predecessors, (1702), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1708 transitions. [2022-11-26 01:03:04,486 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1708 transitions. Word has length 3 [2022-11-26 01:03:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:04,486 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1708 transitions. [2022-11-26 01:03:04,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1708 transitions. [2022-11-26 01:03:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 01:03:04,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:04,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:04,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:04,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:04,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-26 01:03:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:04,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365246776] [2022-11-26 01:03:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:04,695 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 [2022-11-26 01:03:04,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:04,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:04,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:04,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 01:03:04,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:04,899 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 [2022-11-26 01:03:04,905 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 [2022-11-26 01:03:04,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:04,990 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 [2022-11-26 01:03:05,013 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-26 01:03:05,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-26 01:03:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:05,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:05,044 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:05,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365246776] [2022-11-26 01:03:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365246776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:05,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:05,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:03:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625539608] [2022-11-26 01:03:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:05,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:05,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:05,052 INFO L87 Difference]: Start difference. First operand 1430 states and 1708 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:09,030 INFO L93 Difference]: Finished difference Result 1608 states and 1897 transitions. [2022-11-26 01:03:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:03:09,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 01:03:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:09,036 INFO L225 Difference]: With dead ends: 1608 [2022-11-26 01:03:09,036 INFO L226 Difference]: Without dead ends: 1608 [2022-11-26 01:03:09,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:09,038 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 2584 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:09,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 501 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-26 01:03:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-11-26 01:03:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1218. [2022-11-26 01:03:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 609 states have (on average 2.09688013136289) internal successors, (1277), 1213 states have internal predecessors, (1277), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1283 transitions. [2022-11-26 01:03:09,065 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1283 transitions. Word has length 7 [2022-11-26 01:03:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:09,066 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1283 transitions. [2022-11-26 01:03:09,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1283 transitions. [2022-11-26 01:03:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:03:09,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:09,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:09,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:09,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:09,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:09,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-26 01:03:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:09,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91809571] [2022-11-26 01:03:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:09,280 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 [2022-11-26 01:03:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:09,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:09,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:09,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:03:09,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:09,427 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 [2022-11-26 01:03:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:09,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:09,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:09,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91809571] [2022-11-26 01:03:09,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91809571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:09,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:09,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:03:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778541901] [2022-11-26 01:03:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:09,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:03:09,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:09,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:03:09,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:09,452 INFO L87 Difference]: Start difference. First operand 1218 states and 1283 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:11,982 INFO L93 Difference]: Finished difference Result 1547 states and 1641 transitions. [2022-11-26 01:03:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:03:11,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 01:03:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:11,992 INFO L225 Difference]: With dead ends: 1547 [2022-11-26 01:03:11,992 INFO L226 Difference]: Without dead ends: 1547 [2022-11-26 01:03:11,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:11,993 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 971 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:12,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1474 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 01:03:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-26 01:03:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1171. [2022-11-26 01:03:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 609 states have (on average 2.019704433497537) internal successors, (1230), 1166 states have internal predecessors, (1230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1236 transitions. [2022-11-26 01:03:12,028 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1236 transitions. Word has length 8 [2022-11-26 01:03:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:12,029 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1236 transitions. [2022-11-26 01:03:12,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1236 transitions. [2022-11-26 01:03:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:03:12,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:12,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:12,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:12,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:12,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-26 01:03:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:12,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501718376] [2022-11-26 01:03:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:12,243 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 [2022-11-26 01:03:12,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:12,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:12,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:12,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:03:12,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:12,411 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 [2022-11-26 01:03:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:12,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:12,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:12,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501718376] [2022-11-26 01:03:12,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501718376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:12,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:12,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:03:12,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994524275] [2022-11-26 01:03:12,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:12,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:03:12,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:03:12,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:12,440 INFO L87 Difference]: Start difference. First operand 1171 states and 1236 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:16,177 INFO L93 Difference]: Finished difference Result 1626 states and 1723 transitions. [2022-11-26 01:03:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:03:16,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 01:03:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:16,184 INFO L225 Difference]: With dead ends: 1626 [2022-11-26 01:03:16,184 INFO L226 Difference]: Without dead ends: 1626 [2022-11-26 01:03:16,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:16,185 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 674 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:16,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1851 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-26 01:03:16,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-11-26 01:03:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1193. [2022-11-26 01:03:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 641 states have (on average 2.0062402496099843) internal successors, (1286), 1188 states have internal predecessors, (1286), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1292 transitions. [2022-11-26 01:03:16,211 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1292 transitions. Word has length 8 [2022-11-26 01:03:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:16,212 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1292 transitions. [2022-11-26 01:03:16,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1292 transitions. [2022-11-26 01:03:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 01:03:16,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:16,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:16,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:16,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash 693877877, now seen corresponding path program 1 times [2022-11-26 01:03:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:16,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124634290] [2022-11-26 01:03:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:16,425 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 [2022-11-26 01:03:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:16,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:16,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:16,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 01:03:16,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:16,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:16,693 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:16,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124634290] [2022-11-26 01:03:16,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124634290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:16,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:16,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723188619] [2022-11-26 01:03:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:16,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:16,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:16,698 INFO L87 Difference]: Start difference. First operand 1193 states and 1292 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:17,687 INFO L93 Difference]: Finished difference Result 1840 states and 1982 transitions. [2022-11-26 01:03:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 01:03:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 01:03:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:17,696 INFO L225 Difference]: With dead ends: 1840 [2022-11-26 01:03:17,696 INFO L226 Difference]: Without dead ends: 1840 [2022-11-26 01:03:17,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:17,697 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 755 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:17,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 3639 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:03:17,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-11-26 01:03:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1438. [2022-11-26 01:03:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 886 states have (on average 1.9706546275395034) internal successors, (1746), 1433 states have internal predecessors, (1746), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1752 transitions. [2022-11-26 01:03:17,727 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1752 transitions. Word has length 11 [2022-11-26 01:03:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:17,728 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 1752 transitions. [2022-11-26 01:03:17,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1752 transitions. [2022-11-26 01:03:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 01:03:17,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:17,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:17,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:17,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:17,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:17,941 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-11-26 01:03:17,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:17,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023988661] [2022-11-26 01:03:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:17,941 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 [2022-11-26 01:03:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:17,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:17,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-26 01:03:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:18,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 01:03:18,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:18,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:18,133 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:18,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023988661] [2022-11-26 01:03:18,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023988661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:18,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:18,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:03:18,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593026123] [2022-11-26 01:03:18,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:18,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:03:18,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:03:18,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:18,136 INFO L87 Difference]: Start difference. First operand 1438 states and 1752 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:18,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:18,168 INFO L93 Difference]: Finished difference Result 1600 states and 1900 transitions. [2022-11-26 01:03:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:03:18,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-26 01:03:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:18,174 INFO L225 Difference]: With dead ends: 1600 [2022-11-26 01:03:18,174 INFO L226 Difference]: Without dead ends: 1600 [2022-11-26 01:03:18,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:18,175 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 583 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:18,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1994 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:03:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-26 01:03:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1378. [2022-11-26 01:03:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 850 states have (on average 1.9529411764705882) internal successors, (1660), 1373 states have internal predecessors, (1660), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1666 transitions. [2022-11-26 01:03:18,202 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1666 transitions. Word has length 13 [2022-11-26 01:03:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:18,203 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1666 transitions. [2022-11-26 01:03:18,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1666 transitions. [2022-11-26 01:03:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 01:03:18,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:18,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:18,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:18,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:18,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-11-26 01:03:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:18,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343169170] [2022-11-26 01:03:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:18,418 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 [2022-11-26 01:03:18,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:18,419 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:18,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-26 01:03:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:18,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:03:18,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:18,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:18,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:18,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343169170] [2022-11-26 01:03:18,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343169170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:18,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:18,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:18,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598309692] [2022-11-26 01:03:18,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:18,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:18,611 INFO L87 Difference]: Start difference. First operand 1378 states and 1666 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:18,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:18,684 INFO L93 Difference]: Finished difference Result 1572 states and 1844 transitions. [2022-11-26 01:03:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:03:18,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-26 01:03:18,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:18,688 INFO L225 Difference]: With dead ends: 1572 [2022-11-26 01:03:18,689 INFO L226 Difference]: Without dead ends: 1572 [2022-11-26 01:03:18,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:18,690 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 564 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:18,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 3077 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:03:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2022-11-26 01:03:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1348. [2022-11-26 01:03:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 834 states have (on average 1.920863309352518) internal successors, (1602), 1343 states have internal predecessors, (1602), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1608 transitions. [2022-11-26 01:03:18,732 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1608 transitions. Word has length 15 [2022-11-26 01:03:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:18,732 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1608 transitions. [2022-11-26 01:03:18,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1608 transitions. [2022-11-26 01:03:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 01:03:18,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:18,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:18,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:18,948 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 314592142, now seen corresponding path program 1 times [2022-11-26 01:03:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:18,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330701419] [2022-11-26 01:03:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:18,949 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 [2022-11-26 01:03:18,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:18,950 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:18,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-26 01:03:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:19,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 01:03:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:19,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:03:19,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:03:19,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-26 01:03:19,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:03:19,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-11-26 01:03:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:19,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:19,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:19,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330701419] [2022-11-26 01:03:19,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330701419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:19,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:19,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798327220] [2022-11-26 01:03:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:19,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:19,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:19,286 INFO L87 Difference]: Start difference. First operand 1348 states and 1608 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:21,010 INFO L93 Difference]: Finished difference Result 1784 states and 2103 transitions. [2022-11-26 01:03:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:03:21,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-26 01:03:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:21,015 INFO L225 Difference]: With dead ends: 1784 [2022-11-26 01:03:21,015 INFO L226 Difference]: Without dead ends: 1784 [2022-11-26 01:03:21,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:21,016 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 425 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:21,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 3200 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 01:03:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-11-26 01:03:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1347. [2022-11-26 01:03:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 833 states have (on average 1.9207683073229291) internal successors, (1600), 1342 states have internal predecessors, (1600), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1606 transitions. [2022-11-26 01:03:21,041 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1606 transitions. Word has length 16 [2022-11-26 01:03:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:21,042 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 1606 transitions. [2022-11-26 01:03:21,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1606 transitions. [2022-11-26 01:03:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 01:03:21,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:21,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:21,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-26 01:03:21,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:21,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-26 01:03:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998625853] [2022-11-26 01:03:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:21,257 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 [2022-11-26 01:03:21,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:21,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:21,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-26 01:03:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:21,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 01:03:21,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:21,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:21,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:21,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998625853] [2022-11-26 01:03:21,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998625853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:21,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:21,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:03:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228444537] [2022-11-26 01:03:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:21,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:03:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:03:21,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:21,475 INFO L87 Difference]: Start difference. First operand 1347 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:21,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:21,506 INFO L93 Difference]: Finished difference Result 1287 states and 1520 transitions. [2022-11-26 01:03:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:03:21,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 01:03:21,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:21,511 INFO L225 Difference]: With dead ends: 1287 [2022-11-26 01:03:21,511 INFO L226 Difference]: Without dead ends: 1287 [2022-11-26 01:03:21,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:03:21,512 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 1085 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:21,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1123 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:03:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-11-26 01:03:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1287. [2022-11-26 01:03:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 797 states have (on average 1.8996235884567128) internal successors, (1514), 1282 states have internal predecessors, (1514), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1520 transitions. [2022-11-26 01:03:21,547 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1520 transitions. Word has length 18 [2022-11-26 01:03:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:21,548 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1520 transitions. [2022-11-26 01:03:21,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1520 transitions. [2022-11-26 01:03:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 01:03:21,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:21,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:21,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:21,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-26 01:03:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:21,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372309005] [2022-11-26 01:03:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:21,764 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 [2022-11-26 01:03:21,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:21,764 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:21,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-26 01:03:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:21,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:03:21,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:21,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:21,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:21,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372309005] [2022-11-26 01:03:21,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372309005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:21,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:21,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:21,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564994140] [2022-11-26 01:03:21,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:21,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:21,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:21,994 INFO L87 Difference]: Start difference. First operand 1287 states and 1520 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:22,066 INFO L93 Difference]: Finished difference Result 1259 states and 1464 transitions. [2022-11-26 01:03:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:03:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-26 01:03:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:22,070 INFO L225 Difference]: With dead ends: 1259 [2022-11-26 01:03:22,070 INFO L226 Difference]: Without dead ends: 1259 [2022-11-26 01:03:22,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:22,071 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1066 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:22,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 2127 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:03:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-11-26 01:03:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1257. [2022-11-26 01:03:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 781 states have (on average 1.8642765685019207) internal successors, (1456), 1252 states have internal predecessors, (1456), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1462 transitions. [2022-11-26 01:03:22,090 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1462 transitions. Word has length 20 [2022-11-26 01:03:22,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:22,091 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1462 transitions. [2022-11-26 01:03:22,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1462 transitions. [2022-11-26 01:03:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 01:03:22,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:22,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:22,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:22,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:22,305 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:22,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-26 01:03:22,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:22,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986808141] [2022-11-26 01:03:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:22,306 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 [2022-11-26 01:03:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:22,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:22,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-26 01:03:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:22,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:03:22,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:22,526 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 [2022-11-26 01:03:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:22,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:22,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:22,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986808141] [2022-11-26 01:03:22,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986808141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:22,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:22,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:03:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859063762] [2022-11-26 01:03:22,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:22,626 INFO L87 Difference]: Start difference. First operand 1257 states and 1462 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:25,512 INFO L93 Difference]: Finished difference Result 1837 states and 2165 transitions. [2022-11-26 01:03:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 01:03:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-26 01:03:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:25,520 INFO L225 Difference]: With dead ends: 1837 [2022-11-26 01:03:25,520 INFO L226 Difference]: Without dead ends: 1837 [2022-11-26 01:03:25,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:25,521 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1710 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:25,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 1215 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-26 01:03:25,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2022-11-26 01:03:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1253. [2022-11-26 01:03:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 781 states have (on average 1.854033290653009) internal successors, (1448), 1248 states have internal predecessors, (1448), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1454 transitions. [2022-11-26 01:03:25,542 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1454 transitions. Word has length 34 [2022-11-26 01:03:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:25,543 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 1454 transitions. [2022-11-26 01:03:25,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1454 transitions. [2022-11-26 01:03:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 01:03:25,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:25,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:25,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:25,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:25,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-26 01:03:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:25,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148810288] [2022-11-26 01:03:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:25,758 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 [2022-11-26 01:03:25,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:25,759 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:25,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-26 01:03:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:25,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 01:03:25,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:25,996 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 [2022-11-26 01:03:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:26,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:26,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:26,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148810288] [2022-11-26 01:03:26,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148810288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:26,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:26,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:03:26,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065305979] [2022-11-26 01:03:26,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:26,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:26,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:26,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:26,196 INFO L87 Difference]: Start difference. First operand 1253 states and 1454 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:30,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:30,831 INFO L93 Difference]: Finished difference Result 1967 states and 2274 transitions. [2022-11-26 01:03:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 01:03:30,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-26 01:03:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:30,835 INFO L225 Difference]: With dead ends: 1967 [2022-11-26 01:03:30,835 INFO L226 Difference]: Without dead ends: 1967 [2022-11-26 01:03:30,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:30,836 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1212 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:30,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 2453 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-26 01:03:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-11-26 01:03:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1249. [2022-11-26 01:03:30,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 781 states have (on average 1.8437900128040974) internal successors, (1440), 1244 states have internal predecessors, (1440), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1446 transitions. [2022-11-26 01:03:30,870 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1446 transitions. Word has length 34 [2022-11-26 01:03:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:30,871 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1446 transitions. [2022-11-26 01:03:30,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1446 transitions. [2022-11-26 01:03:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-26 01:03:30,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:30,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:30,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:31,085 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-26 01:03:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:31,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006681320] [2022-11-26 01:03:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:31,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:03:31,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:31,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:31,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-26 01:03:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:31,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:03:31,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:31,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:31,409 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:31,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006681320] [2022-11-26 01:03:31,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006681320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:31,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:31,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:31,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351040056] [2022-11-26 01:03:31,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:31,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:31,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:31,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:31,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:31,412 INFO L87 Difference]: Start difference. First operand 1249 states and 1446 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:31,476 INFO L93 Difference]: Finished difference Result 1237 states and 1426 transitions. [2022-11-26 01:03:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:03:31,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-26 01:03:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:31,480 INFO L225 Difference]: With dead ends: 1237 [2022-11-26 01:03:31,480 INFO L226 Difference]: Without dead ends: 1237 [2022-11-26 01:03:31,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:31,481 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1035 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:31,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 2105 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:03:31,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-11-26 01:03:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1237. [2022-11-26 01:03:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 769 states have (on average 1.846553966189857) internal successors, (1420), 1232 states have internal predecessors, (1420), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1426 transitions. [2022-11-26 01:03:31,499 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1426 transitions. Word has length 52 [2022-11-26 01:03:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:31,499 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1426 transitions. [2022-11-26 01:03:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1426 transitions. [2022-11-26 01:03:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-26 01:03:31,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:31,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:31,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-26 01:03:31,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:31,719 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-26 01:03:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:31,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115580898] [2022-11-26 01:03:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:31,720 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 [2022-11-26 01:03:31,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:31,722 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:31,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-26 01:03:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:32,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 01:03:32,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:32,116 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 [2022-11-26 01:03:32,124 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 [2022-11-26 01:03:32,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:03:32,648 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 [2022-11-26 01:03:32,665 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-26 01:03:32,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-26 01:03:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:32,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:32,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:32,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115580898] [2022-11-26 01:03:32,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115580898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:32,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:32,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:03:32,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889535853] [2022-11-26 01:03:32,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:32,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:32,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:32,683 INFO L87 Difference]: Start difference. First operand 1237 states and 1426 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:36,123 INFO L93 Difference]: Finished difference Result 1585 states and 1891 transitions. [2022-11-26 01:03:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:03:36,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-26 01:03:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:36,129 INFO L225 Difference]: With dead ends: 1585 [2022-11-26 01:03:36,129 INFO L226 Difference]: Without dead ends: 1585 [2022-11-26 01:03:36,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:36,130 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1055 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:36,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 787 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-26 01:03:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-11-26 01:03:36,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1167. [2022-11-26 01:03:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 737 states have (on average 1.78561736770692) internal successors, (1316), 1162 states have internal predecessors, (1316), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1322 transitions. [2022-11-26 01:03:36,147 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1322 transitions. Word has length 60 [2022-11-26 01:03:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:36,147 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1322 transitions. [2022-11-26 01:03:36,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:36,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1322 transitions. [2022-11-26 01:03:36,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 01:03:36,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:36,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:36,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-26 01:03:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:36,363 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-26 01:03:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655622102] [2022-11-26 01:03:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:36,364 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 [2022-11-26 01:03:36,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:36,365 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:36,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-26 01:03:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:36,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 01:03:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:36,669 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 [2022-11-26 01:03:36,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 01:03:36,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-26 01:03:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:36,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:36,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:36,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655622102] [2022-11-26 01:03:36,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655622102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:36,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:36,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:36,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328540622] [2022-11-26 01:03:36,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:36,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:03:36,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:03:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:36,751 INFO L87 Difference]: Start difference. First operand 1167 states and 1322 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:39,939 INFO L93 Difference]: Finished difference Result 1166 states and 1321 transitions. [2022-11-26 01:03:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 01:03:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-26 01:03:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:39,943 INFO L225 Difference]: With dead ends: 1166 [2022-11-26 01:03:39,943 INFO L226 Difference]: Without dead ends: 1166 [2022-11-26 01:03:39,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 01:03:39,944 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 4 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:39,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2556 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-26 01:03:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-11-26 01:03:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2022-11-26 01:03:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 737 states have (on average 1.7842605156037992) internal successors, (1315), 1161 states have internal predecessors, (1315), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1321 transitions. [2022-11-26 01:03:39,958 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1321 transitions. Word has length 65 [2022-11-26 01:03:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:39,959 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1321 transitions. [2022-11-26 01:03:39,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1321 transitions. [2022-11-26 01:03:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 01:03:39,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:39,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:39,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:40,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:40,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:40,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:40,175 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-26 01:03:40,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:40,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697974032] [2022-11-26 01:03:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:40,176 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 [2022-11-26 01:03:40,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:40,177 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:40,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-26 01:03:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:40,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 01:03:40,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:40,525 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 [2022-11-26 01:03:40,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 01:03:40,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 01:03:40,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 01:03:40,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-26 01:03:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:40,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:40,662 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:40,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697974032] [2022-11-26 01:03:40,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697974032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:40,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:40,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:40,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130889758] [2022-11-26 01:03:40,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:40,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:03:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:03:40,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:40,664 INFO L87 Difference]: Start difference. First operand 1166 states and 1321 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:44,883 INFO L93 Difference]: Finished difference Result 1165 states and 1320 transitions. [2022-11-26 01:03:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 01:03:44,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-26 01:03:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:44,888 INFO L225 Difference]: With dead ends: 1165 [2022-11-26 01:03:44,888 INFO L226 Difference]: Without dead ends: 1165 [2022-11-26 01:03:44,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 01:03:44,889 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 2 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:44,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2613 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-26 01:03:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-11-26 01:03:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2022-11-26 01:03:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 736 states have (on average 1.7853260869565217) internal successors, (1314), 1160 states have internal predecessors, (1314), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1320 transitions. [2022-11-26 01:03:44,906 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1320 transitions. Word has length 65 [2022-11-26 01:03:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:44,906 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1320 transitions. [2022-11-26 01:03:44,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1320 transitions. [2022-11-26 01:03:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 01:03:44,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:44,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:44,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:45,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:45,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash -951740241, now seen corresponding path program 1 times [2022-11-26 01:03:45,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:45,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116414805] [2022-11-26 01:03:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:45,124 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 [2022-11-26 01:03:45,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:45,125 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:45,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 (19)] Waiting until timeout for monitored process [2022-11-26 01:03:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:45,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:03:45,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:45,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:03:45,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:45,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116414805] [2022-11-26 01:03:45,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116414805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:03:45,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:03:45,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:03:45,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27117622] [2022-11-26 01:03:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:03:45,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:03:45,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:45,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:03:45,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:03:45,488 INFO L87 Difference]: Start difference. First operand 1165 states and 1320 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 01:03:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:45,545 INFO L93 Difference]: Finished difference Result 1168 states and 1324 transitions. [2022-11-26 01:03:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:03:45,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-26 01:03:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:45,556 INFO L225 Difference]: With dead ends: 1168 [2022-11-26 01:03:45,556 INFO L226 Difference]: Without dead ends: 1168 [2022-11-26 01:03:45,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:03:45,557 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 2 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:45,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3025 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:03:45,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-26 01:03:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2022-11-26 01:03:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 738 states have (on average 1.7845528455284554) internal successors, (1317), 1163 states have internal predecessors, (1317), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-26 01:03:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1324 transitions. [2022-11-26 01:03:45,589 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1324 transitions. Word has length 73 [2022-11-26 01:03:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:45,589 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1324 transitions. [2022-11-26 01:03:45,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 01:03:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1324 transitions. [2022-11-26 01:03:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-26 01:03:45,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:45,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:45,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 (19)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:45,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:45,806 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:45,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1324394752, now seen corresponding path program 1 times [2022-11-26 01:03:45,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:45,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417408491] [2022-11-26 01:03:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:45,807 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 [2022-11-26 01:03:45,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:45,808 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:45,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 (20)] Waiting until timeout for monitored process [2022-11-26 01:03:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:46,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:03:46,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:46,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:46,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:46,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417408491] [2022-11-26 01:03:46,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417408491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:46,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [30274097] [2022-11-26 01:03:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:46,283 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:03:46,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:03:46,284 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:03:46,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-26 01:03:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:46,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:03:46,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:46,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:46,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [30274097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:46,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689769608] [2022-11-26 01:03:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:46,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:46,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:46,972 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:03:46,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-26 01:03:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:03:47,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:47,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:47,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689769608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:47,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 01:03:47,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-26 01:03:47,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870478690] [2022-11-26 01:03:47,388 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 01:03:47,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:03:47,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:03:47,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:03:47,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:03:47,390 INFO L87 Difference]: Start difference. First operand 1168 states and 1324 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 01:03:47,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:47,605 INFO L93 Difference]: Finished difference Result 1180 states and 1341 transitions. [2022-11-26 01:03:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 01:03:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-26 01:03:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:47,610 INFO L225 Difference]: With dead ends: 1180 [2022-11-26 01:03:47,610 INFO L226 Difference]: Without dead ends: 1180 [2022-11-26 01:03:47,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:03:47,611 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 12 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:47,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4034 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:03:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-26 01:03:47,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2022-11-26 01:03:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 747 states have (on average 1.783132530120482) internal successors, (1332), 1172 states have internal predecessors, (1332), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-26 01:03:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1339 transitions. [2022-11-26 01:03:47,630 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1339 transitions. Word has length 74 [2022-11-26 01:03:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:47,631 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1339 transitions. [2022-11-26 01:03:47,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 01:03:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1339 transitions. [2022-11-26 01:03:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 01:03:47,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:47,632 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:47,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 (20)] Ended with exit code 0 [2022-11-26 01:03:47,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:48,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:48,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:48,252 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:03:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:48,252 INFO L85 PathProgramCache]: Analyzing trace with hash -508582673, now seen corresponding path program 2 times [2022-11-26 01:03:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:48,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393369003] [2022-11-26 01:03:48,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:03:48,253 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 [2022-11-26 01:03:48,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:48,254 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:48,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 (23)] Waiting until timeout for monitored process [2022-11-26 01:03:48,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:03:48,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:03:48,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 01:03:48,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:48,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:49,075 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:03:49,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393369003] [2022-11-26 01:03:49,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393369003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:49,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1764741396] [2022-11-26 01:03:49,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:03:49,075 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:03:49,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:03:49,078 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:03:49,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-26 01:03:50,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:03:50,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:03:50,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 01:03:50,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:50,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:50,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1764741396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:50,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544827780] [2022-11-26 01:03:50,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:03:50,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:50,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:50,916 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:03:50,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-26 01:04:08,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:04:08,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:04:08,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-26 01:04:08,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:04:08,394 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-26 01:04:08,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-26 01:04:08,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 01:04:08,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 01:04:08,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 01:04:08,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-26 01:04:08,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-26 01:04:08,747 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1650 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1650) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-26 01:04:08,763 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652))) (exists ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1653) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-26 01:04:08,777 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-26 01:04:08,791 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-26 01:04:08,861 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-26 01:04:08,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-26 01:04:08,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-26 01:04:08,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-26 01:04:08,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-26 01:04:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-26 01:04:09,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:04:09,417 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-26 01:04:09,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544827780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:04:09,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-26 01:04:09,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-26 01:04:09,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948069370] [2022-11-26 01:04:09,425 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-26 01:04:09,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 01:04:09,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:04:09,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 01:04:09,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-11-26 01:04:09,426 INFO L87 Difference]: Start difference. First operand 1178 states and 1339 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 01:04:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:04:25,290 INFO L93 Difference]: Finished difference Result 1587 states and 1871 transitions. [2022-11-26 01:04:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-26 01:04:25,291 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-11-26 01:04:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:04:25,296 INFO L225 Difference]: With dead ends: 1587 [2022-11-26 01:04:25,296 INFO L226 Difference]: Without dead ends: 1581 [2022-11-26 01:04:25,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=421, Invalid=1939, Unknown=12, NotChecked=490, Total=2862 [2022-11-26 01:04:25,297 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1838 mSDsluCounter, 6262 mSDsCounter, 0 mSdLazyCounter, 6531 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 12020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5449 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:04:25,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 6907 Invalid, 12020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 6531 Invalid, 0 Unknown, 5449 Unchecked, 14.4s Time] [2022-11-26 01:04:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-11-26 01:04:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1187. [2022-11-26 01:04:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 756 states have (on average 1.7764550264550265) internal successors, (1343), 1181 states have internal predecessors, (1343), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-26 01:04:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1350 transitions. [2022-11-26 01:04:25,318 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1350 transitions. Word has length 77 [2022-11-26 01:04:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:04:25,319 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1350 transitions. [2022-11-26 01:04:25,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 01:04:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1350 transitions. [2022-11-26 01:04:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-26 01:04:25,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:04:25,320 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:04:25,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-26 01:04:25,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 (23)] Forceful destruction successful, exit code 0 [2022-11-26 01:04:25,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-26 01:04:25,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:04:25,929 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-26 01:04:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:04:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 201292623, now seen corresponding path program 3 times [2022-11-26 01:04:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:04:25,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503833090] [2022-11-26 01:04:25,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:04:25,930 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 [2022-11-26 01:04:25,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:04:25,931 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:04:25,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/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 (26)] Waiting until timeout for monitored process [2022-11-26 01:04:26,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-26 01:04:26,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:04:26,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-26 01:04:26,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:04:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:26,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:04:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:27,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:04:27,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503833090] [2022-11-26 01:04:27,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503833090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:04:27,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418131136] [2022-11-26 01:04:27,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:04:27,835 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:04:27,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:04:27,836 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:04:27,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-26 01:04:33,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-26 01:04:33,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:04:33,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-26 01:04:33,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:04:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:33,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:04:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:33,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [418131136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:04:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132413389] [2022-11-26 01:04:33,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:04:33,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:04:33,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:04:33,473 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:04:33,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b23f92-3768-409f-8b7e-c17be8f2f839/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process