./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.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_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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_b1142849-cf5e-4823-b6cc-33b568c0e427/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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- 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 [2022-11-25 22:26:16,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:26:16,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:26:16,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:26:16,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:26:16,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:26:16,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:26:16,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:26:16,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:26:16,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:26:16,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:26:16,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:26:16,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:26:16,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:26:16,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:26:16,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:26:16,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:26:16,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:26:16,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:26:16,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:26:16,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:26:16,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:26:16,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:26:16,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:26:16,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:26:16,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:26:16,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:26:16,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:26:16,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:26:16,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:26:16,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:26:16,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:26:16,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:26:16,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:26:16,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:26:16,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:26:16,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:26:16,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:26:16,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:26:16,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:26:16,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:26:16,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-25 22:26:16,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:26:16,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:26:16,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:26:16,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:26:16,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:26:16,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:26:16,228 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:26:16,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:26:16,229 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:26:16,229 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:26:16,230 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:26:16,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:26:16,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:26:16,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:26:16,231 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:26:16,231 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:26:16,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:26:16,232 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:26:16,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 22:26:16,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 22:26:16,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:26:16,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:26:16,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:26:16,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:26:16,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:26:16,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:26:16,235 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 22:26:16,236 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 22:26:16,236 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 22:26:16,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:26:16,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:26:16,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:26:16,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:26:16,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:26:16,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:26:16,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:26:16,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:26:16,239 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:26:16,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:26:16,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:26:16,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:26:16,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:26:16,240 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_b1142849-cf5e-4823-b6cc-33b568c0e427/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-11-25 22:26:16,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:26:16,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:26:16,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:26:16,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:26:16,535 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:26:16,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-25 22:26:19,608 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:26:20,025 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:26:20,025 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-25 22:26:20,045 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data/55ae93300/128982c4e74e425abf787cdbbecc0caa/FLAGcdb6ffa11 [2022-11-25 22:26:20,061 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data/55ae93300/128982c4e74e425abf787cdbbecc0caa [2022-11-25 22:26:20,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:26:20,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:26:20,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:20,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:26:20,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:26:20,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:20" (1/1) ... [2022-11-25 22:26:20,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4644721e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:20, skipping insertion in model container [2022-11-25 22:26:20,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:20" (1/1) ... [2022-11-25 22:26:20,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:26:20,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:26:20,753 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-25 22:26:21,024 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:26:21,036 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-25 22:26:21,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:21,081 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) [2022-11-25 22:26:21,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f20599c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:21, skipping insertion in model container [2022-11-25 22:26:21,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:21,083 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 22:26:21,085 INFO L158 Benchmark]: Toolchain (without parser) took 1017.93ms. Allocated memory is still 144.7MB. Free memory was 95.9MB in the beginning and 62.3MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-25 22:26:21,085 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 104.9MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:26:21,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1014.96ms. Allocated memory is still 144.7MB. Free memory was 95.3MB in the beginning and 62.3MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-25 22:26:21,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 104.9MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1014.96ms. Allocated memory is still 144.7MB. Free memory was 95.3MB in the beginning and 62.3MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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_b1142849-cf5e-4823-b6cc-33b568c0e427/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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- 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 [2022-11-25 22:26:23,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:26:23,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:26:23,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:26:23,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:26:23,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:26:23,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:26:23,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:26:23,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:26:23,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:26:23,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:26:23,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:26:23,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:26:23,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:26:23,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:26:23,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:26:23,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:26:23,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:26:23,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:26:23,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:26:23,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:26:23,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:26:23,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:26:23,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:26:23,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:26:23,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:26:23,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:26:23,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:26:23,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:26:23,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:26:23,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:26:23,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:26:23,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:26:23,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:26:23,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:26:23,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:26:23,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:26:23,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:26:23,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:26:23,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:26:23,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:26:23,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-25 22:26:23,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:26:23,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:26:23,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:26:23,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:26:23,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:26:23,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:26:23,621 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:26:23,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:26:23,622 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:26:23,622 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:26:23,623 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:26:23,623 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:26:23,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 22:26:23,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 22:26:23,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:26:23,625 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:26:23,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:26:23,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:26:23,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:26:23,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:26:23,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 22:26:23,626 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 22:26:23,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 22:26:23,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:26:23,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:26:23,627 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:26:23,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:26:23,628 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:26:23,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:26:23,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:26:23,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:26:23,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:26:23,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:26:23,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:26:23,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:26:23,630 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:26:23,630 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:26:23,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:26:23,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:26:23,631 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_b1142849-cf5e-4823-b6cc-33b568c0e427/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-11-25 22:26:23,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:26:24,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:26:24,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:26:24,017 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:26:24,017 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:26:24,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-25 22:26:27,300 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:26:27,782 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:26:27,782 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-25 22:26:27,814 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data/d0799530c/f14650ac32464d05ab08367091907f2c/FLAG2b7470a8b [2022-11-25 22:26:27,842 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/data/d0799530c/f14650ac32464d05ab08367091907f2c [2022-11-25 22:26:27,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:26:27,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:26:27,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:27,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:26:27,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:26:27,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:27" (1/1) ... [2022-11-25 22:26:27,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d63067c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:27, skipping insertion in model container [2022-11-25 22:26:27,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:27" (1/1) ... [2022-11-25 22:26:27,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:26:27,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:26:28,612 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-25 22:26:28,866 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:26:28,869 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-25 22:26:28,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:28,932 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 22:26:28,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:26:28,970 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-25 22:26:29,076 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:26:29,079 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-25 22:26:29,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:29,091 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:26:29,114 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-25 22:26:29,209 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:26:29,215 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_b1142849-cf5e-4823-b6cc-33b568c0e427/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-25 22:26:29,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:29,272 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:26:29,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29 WrapperNode [2022-11-25 22:26:29,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:29,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:26:29,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:26:29,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:26:29,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,468 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3030 [2022-11-25 22:26:29,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:26:29,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:26:29,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:26:29,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:26:29,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,635 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:26:29,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:26:29,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:26:29,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:26:29,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (1/1) ... [2022-11-25 22:26:29,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:26:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:29,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:26:29,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:26:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-25 22:26:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 22:26:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:26:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:26:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 22:26:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 22:26:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:26:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:26:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:26:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:26:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 22:26:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:26:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:26:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 22:26:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:26:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:26:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:26:30,099 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:26:30,101 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:26:30,105 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 22:26:36,995 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:26:37,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:26:37,018 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-25 22:26:37,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:26:37 BoogieIcfgContainer [2022-11-25 22:26:37,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:26:37,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:26:37,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:26:37,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:26:37,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:26:27" (1/3) ... [2022-11-25 22:26:37,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30afd18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:26:37, skipping insertion in model container [2022-11-25 22:26:37,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:29" (2/3) ... [2022-11-25 22:26:37,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30afd18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:26:37, skipping insertion in model container [2022-11-25 22:26:37,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:26:37" (3/3) ... [2022-11-25 22:26:37,034 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-2.i [2022-11-25 22:26:37,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:26:37,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-11-25 22:26:37,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:26:37,152 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;@246d9aed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:26:37,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-11-25 22:26:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-25 22:26:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:26:37,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:37,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:26:37,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:26:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-25 22:26:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:37,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222496841] [2022-11-25 22:26:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:37,210 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 [2022-11-25 22:26:37,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:37,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:26:37,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:37,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:26:37,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:37,524 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 [2022-11-25 22:26:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:37,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:37,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:37,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222496841] [2022-11-25 22:26:37,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222496841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:37,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:37,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:37,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186561849] [2022-11-25 22:26:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:37,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:37,613 INFO L87 Difference]: Start difference. First operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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) [2022-11-25 22:26:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:41,254 INFO L93 Difference]: Finished difference Result 2234 states and 3299 transitions. [2022-11-25 22:26:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:41,261 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 [2022-11-25 22:26:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:41,291 INFO L225 Difference]: With dead ends: 2234 [2022-11-25 22:26:41,292 INFO L226 Difference]: Without dead ends: 2232 [2022-11-25 22:26:41,293 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 [2022-11-25 22:26:41,296 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 1983 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2486 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:41,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2486 Valid, 2783 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 22:26:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-11-25 22:26:41,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2054. [2022-11-25 22:26:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1031 states have (on average 2.0417070805043647) internal successors, (2105), 2048 states have internal predecessors, (2105), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-25 22:26:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3111 transitions. [2022-11-25 22:26:41,727 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3111 transitions. Word has length 3 [2022-11-25 22:26:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:41,727 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3111 transitions. [2022-11-25 22:26:41,728 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) [2022-11-25 22:26:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3111 transitions. [2022-11-25 22:26:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 22:26:41,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:41,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 22:26:41,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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)] Ended with exit code 0 [2022-11-25 22:26:41,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:41,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:26:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-25 22:26:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:41,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187779535] [2022-11-25 22:26:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:41,955 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 [2022-11-25 22:26:41,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:41,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:26:41,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:42,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:26:42,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:42,128 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 [2022-11-25 22:26:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:42,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:42,154 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:42,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187779535] [2022-11-25 22:26:42,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187779535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:42,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:42,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:42,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360898561] [2022-11-25 22:26:42,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:42,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:42,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:42,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:42,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:42,158 INFO L87 Difference]: Start difference. First operand 2054 states and 3111 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) [2022-11-25 22:26:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:46,915 INFO L93 Difference]: Finished difference Result 3462 states and 5551 transitions. [2022-11-25 22:26:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:46,916 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 [2022-11-25 22:26:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:46,934 INFO L225 Difference]: With dead ends: 3462 [2022-11-25 22:26:46,934 INFO L226 Difference]: Without dead ends: 3462 [2022-11-25 22:26:46,934 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 [2022-11-25 22:26:46,935 INFO L413 NwaCegarLoop]: 3415 mSDtfsCounter, 1440 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:46,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 5496 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 22:26:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-11-25 22:26:47,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3176. [2022-11-25 22:26:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 1654 states have (on average 2.0151148730350665) internal successors, (3333), 3170 states have internal predecessors, (3333), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:26:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5339 transitions. [2022-11-25 22:26:47,316 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5339 transitions. Word has length 3 [2022-11-25 22:26:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:47,316 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 5339 transitions. [2022-11-25 22:26:47,317 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) [2022-11-25 22:26:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5339 transitions. [2022-11-25 22:26:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 22:26:47,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:47,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:47,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:47,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:47,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:26:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-25 22:26:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:47,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690430014] [2022-11-25 22:26:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:47,532 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 [2022-11-25 22:26:47,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:47,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:26:47,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:47,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:26:47,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:47,723 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 [2022-11-25 22:26:47,730 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 [2022-11-25 22:26:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:47,812 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 [2022-11-25 22:26:47,831 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:26:47,832 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 [2022-11-25 22:26:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:47,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:47,861 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:47,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690430014] [2022-11-25 22:26:47,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690430014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:47,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:47,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286878845] [2022-11-25 22:26:47,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:47,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:26:47,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:26:47,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:26:47,868 INFO L87 Difference]: Start difference. First operand 3176 states and 5339 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) [2022-11-25 22:26:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:53,288 INFO L93 Difference]: Finished difference Result 3343 states and 5514 transitions. [2022-11-25 22:26:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:26:53,289 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 [2022-11-25 22:26:53,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:53,307 INFO L225 Difference]: With dead ends: 3343 [2022-11-25 22:26:53,307 INFO L226 Difference]: Without dead ends: 3343 [2022-11-25 22:26:53,308 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 [2022-11-25 22:26:53,309 INFO L413 NwaCegarLoop]: 2361 mSDtfsCounter, 2255 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:53,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 2451 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 22:26:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-11-25 22:26:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2043. [2022-11-25 22:26:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1031 states have (on average 2.0300678952473326) internal successors, (2093), 2037 states have internal predecessors, (2093), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-25 22:26:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3099 transitions. [2022-11-25 22:26:53,653 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3099 transitions. Word has length 7 [2022-11-25 22:26:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3099 transitions. [2022-11-25 22:26:53,655 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) [2022-11-25 22:26:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3099 transitions. [2022-11-25 22:26:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:26:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:53,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:53,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:53,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:53,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:26:53,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:53,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-25 22:26:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:53,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847316284] [2022-11-25 22:26:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:53,871 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 [2022-11-25 22:26:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:53,879 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:26:53,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:54,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:26:54,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:54,030 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 [2022-11-25 22:26:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:54,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:54,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847316284] [2022-11-25 22:26:54,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847316284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:54,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:54,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198112553] [2022-11-25 22:26:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:54,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:54,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:54,058 INFO L87 Difference]: Start difference. First operand 2043 states and 3099 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) [2022-11-25 22:26:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:57,206 INFO L93 Difference]: Finished difference Result 3209 states and 5286 transitions. [2022-11-25 22:26:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:57,208 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 [2022-11-25 22:26:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:57,224 INFO L225 Difference]: With dead ends: 3209 [2022-11-25 22:26:57,224 INFO L226 Difference]: Without dead ends: 3209 [2022-11-25 22:26:57,224 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 [2022-11-25 22:26:57,225 INFO L413 NwaCegarLoop]: 4864 mSDtfsCounter, 1802 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:57,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7121 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 22:26:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-11-25 22:26:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 1996. [2022-11-25 22:26:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1031 states have (on average 1.9844810863239573) internal successors, (2046), 1990 states have internal predecessors, (2046), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-25 22:26:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3052 transitions. [2022-11-25 22:26:57,538 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3052 transitions. Word has length 8 [2022-11-25 22:26:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:57,539 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 3052 transitions. [2022-11-25 22:26:57,539 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) [2022-11-25 22:26:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3052 transitions. [2022-11-25 22:26:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:26:57,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:57,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:57,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:57,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:26:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-25 22:26:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:57,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235057792] [2022-11-25 22:26:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:57,754 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 [2022-11-25 22:26:57,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:57,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:26:57,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:26:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:57,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:26:57,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:57,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:26:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:57,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:57,930 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:57,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235057792] [2022-11-25 22:26:57,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235057792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:57,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:57,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852729268] [2022-11-25 22:26:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:57,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:57,932 INFO L87 Difference]: Start difference. First operand 1996 states and 3052 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) [2022-11-25 22:27:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:02,010 INFO L93 Difference]: Finished difference Result 3274 states and 5354 transitions. [2022-11-25 22:27:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:27:02,010 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 [2022-11-25 22:27:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:02,026 INFO L225 Difference]: With dead ends: 3274 [2022-11-25 22:27:02,027 INFO L226 Difference]: Without dead ends: 3274 [2022-11-25 22:27:02,027 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 [2022-11-25 22:27:02,028 INFO L413 NwaCegarLoop]: 5056 mSDtfsCounter, 1489 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:02,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 7477 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 22:27:02,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-11-25 22:27:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2018. [2022-11-25 22:27:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1063 states have (on average 1.9774223894637817) internal successors, (2102), 2012 states have internal predecessors, (2102), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-25 22:27:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3108 transitions. [2022-11-25 22:27:02,300 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3108 transitions. Word has length 8 [2022-11-25 22:27:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:02,301 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3108 transitions. [2022-11-25 22:27:02,301 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) [2022-11-25 22:27:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3108 transitions. [2022-11-25 22:27:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:27:02,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:02,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:02,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:02,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:02,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr430REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash 696609462, now seen corresponding path program 1 times [2022-11-25 22:27:02,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:02,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832711874] [2022-11-25 22:27:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:02,521 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 [2022-11-25 22:27:02,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:02,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:02,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:02,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:27:02,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:02,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:02,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:02,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832711874] [2022-11-25 22:27:02,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832711874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:02,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:02,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:27:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576834364] [2022-11-25 22:27:02,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:02,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:27:02,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:27:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:02,758 INFO L87 Difference]: Start difference. First operand 2018 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-11-25 22:27:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:03,118 INFO L93 Difference]: Finished difference Result 3485 states and 5610 transitions. [2022-11-25 22:27:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:27:03,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2022-11-25 22:27:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:03,135 INFO L225 Difference]: With dead ends: 3485 [2022-11-25 22:27:03,135 INFO L226 Difference]: Without dead ends: 3485 [2022-11-25 22:27:03,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:03,136 INFO L413 NwaCegarLoop]: 3604 mSDtfsCounter, 1560 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6489 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:03,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 6489 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:27:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2022-11-25 22:27:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3192. [2022-11-25 22:27:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 1737 states have (on average 1.9568221070811744) internal successors, (3399), 3186 states have internal predecessors, (3399), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 5405 transitions. [2022-11-25 22:27:03,483 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 5405 transitions. Word has length 11 [2022-11-25 22:27:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:03,483 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 5405 transitions. [2022-11-25 22:27:03,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-11-25 22:27:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 5405 transitions. [2022-11-25 22:27:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:27:03,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:03,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:03,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:03,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-11-25 22:27:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:03,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274820175] [2022-11-25 22:27:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:03,697 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 [2022-11-25 22:27:03,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:03,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:03,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:03,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:27:03,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:03,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:03,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:03,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274820175] [2022-11-25 22:27:03,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274820175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:03,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:03,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:27:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046061087] [2022-11-25 22:27:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:27:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:27:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:03,854 INFO L87 Difference]: Start difference. First operand 3192 states and 5405 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) [2022-11-25 22:27:03,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:03,911 INFO L93 Difference]: Finished difference Result 3346 states and 5545 transitions. [2022-11-25 22:27:03,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:27:03,912 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 [2022-11-25 22:27:03,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:03,926 INFO L225 Difference]: With dead ends: 3346 [2022-11-25 22:27:03,926 INFO L226 Difference]: Without dead ends: 3346 [2022-11-25 22:27:03,926 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 [2022-11-25 22:27:03,927 INFO L413 NwaCegarLoop]: 3200 mSDtfsCounter, 1394 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4515 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 [2022-11-25 22:27:03,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4515 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:27:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2022-11-25 22:27:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 3132. [2022-11-25 22:27:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 1701 states have (on average 1.9476778365667256) internal successors, (3313), 3126 states have internal predecessors, (3313), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5319 transitions. [2022-11-25 22:27:04,282 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5319 transitions. Word has length 13 [2022-11-25 22:27:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:04,283 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 5319 transitions. [2022-11-25 22:27:04,283 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) [2022-11-25 22:27:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5319 transitions. [2022-11-25 22:27:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 22:27:04,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:04,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:04,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:04,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:04,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash -579444504, now seen corresponding path program 1 times [2022-11-25 22:27:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:04,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41346677] [2022-11-25 22:27:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:04,502 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 [2022-11-25 22:27:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:04,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:04,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:04,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:27:04,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:04,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:04,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:04,725 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 [2022-11-25 22:27:04,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:04,782 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 [2022-11-25 22:27:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:04,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:04,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:04,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41346677] [2022-11-25 22:27:04,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41346677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:04,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:04,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:27:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186002688] [2022-11-25 22:27:04,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:04,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:27:04,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:27:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:27:04,827 INFO L87 Difference]: Start difference. First operand 3132 states and 5319 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:08,651 INFO L93 Difference]: Finished difference Result 5449 states and 9667 transitions. [2022-11-25 22:27:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:27:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-25 22:27:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:08,671 INFO L225 Difference]: With dead ends: 5449 [2022-11-25 22:27:08,672 INFO L226 Difference]: Without dead ends: 5449 [2022-11-25 22:27:08,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:27:08,673 INFO L413 NwaCegarLoop]: 3457 mSDtfsCounter, 1333 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 9264 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:08,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 9264 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 22:27:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-11-25 22:27:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 3131. [2022-11-25 22:27:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 1700 states have (on average 1.9476470588235295) internal successors, (3311), 3125 states have internal predecessors, (3311), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5317 transitions. [2022-11-25 22:27:09,223 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5317 transitions. Word has length 14 [2022-11-25 22:27:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:09,224 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5317 transitions. [2022-11-25 22:27:09,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5317 transitions. [2022-11-25 22:27:09,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 22:27:09,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:09,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:09,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:09,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-25 22:27:09,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842405577] [2022-11-25 22:27:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:09,438 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 [2022-11-25 22:27:09,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:09,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:09,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:09,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:27:09,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:09,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:09,647 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842405577] [2022-11-25 22:27:09,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842405577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:09,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:09,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:27:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462137444] [2022-11-25 22:27:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:09,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:27:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:27:09,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:09,650 INFO L87 Difference]: Start difference. First operand 3131 states and 5317 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) [2022-11-25 22:27:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:09,746 INFO L93 Difference]: Finished difference Result 3071 states and 5231 transitions. [2022-11-25 22:27:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:27:09,747 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 [2022-11-25 22:27:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:09,763 INFO L225 Difference]: With dead ends: 3071 [2022-11-25 22:27:09,764 INFO L226 Difference]: Without dead ends: 3071 [2022-11-25 22:27:09,764 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 [2022-11-25 22:27:09,765 INFO L413 NwaCegarLoop]: 2952 mSDtfsCounter, 1931 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 3479 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 [2022-11-25 22:27:09,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 3479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:27:09,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2022-11-25 22:27:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3071. [2022-11-25 22:27:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1664 states have (on average 1.9381009615384615) internal successors, (3225), 3065 states have internal predecessors, (3225), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5231 transitions. [2022-11-25 22:27:10,041 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5231 transitions. Word has length 18 [2022-11-25 22:27:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:10,042 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 5231 transitions. [2022-11-25 22:27:10,042 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) [2022-11-25 22:27:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5231 transitions. [2022-11-25 22:27:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 22:27:10,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:10,043 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] [2022-11-25 22:27:10,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:10,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:10,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-25 22:27:10,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259721094] [2022-11-25 22:27:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:10,262 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 [2022-11-25 22:27:10,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:10,263 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:10,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:10,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:27:10,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:10,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:10,498 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:10,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259721094] [2022-11-25 22:27:10,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259721094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:10,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:10,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:27:10,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682376456] [2022-11-25 22:27:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:10,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:27:10,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:27:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:27:10,501 INFO L87 Difference]: Start difference. First operand 3071 states and 5231 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) [2022-11-25 22:27:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:10,608 INFO L93 Difference]: Finished difference Result 3043 states and 5175 transitions. [2022-11-25 22:27:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:27:10,608 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 [2022-11-25 22:27:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:10,617 INFO L225 Difference]: With dead ends: 3043 [2022-11-25 22:27:10,617 INFO L226 Difference]: Without dead ends: 3043 [2022-11-25 22:27:10,618 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 [2022-11-25 22:27:10,618 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1912 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 6334 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 [2022-11-25 22:27:10,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 6334 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:27:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-11-25 22:27:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3041. [2022-11-25 22:27:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 1648 states have (on average 1.9217233009708738) internal successors, (3167), 3035 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 5173 transitions. [2022-11-25 22:27:10,901 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 5173 transitions. Word has length 20 [2022-11-25 22:27:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:10,902 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 5173 transitions. [2022-11-25 22:27:10,902 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) [2022-11-25 22:27:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 5173 transitions. [2022-11-25 22:27:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 22:27:10,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:10,903 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] [2022-11-25 22:27:10,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:11,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:11,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-25 22:27:11,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:11,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506232710] [2022-11-25 22:27:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:11,118 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 [2022-11-25 22:27:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:11,119 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:11,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:27:11,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:11,335 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 [2022-11-25 22:27:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:11,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:11,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506232710] [2022-11-25 22:27:11,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506232710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:11,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:11,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:27:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467312162] [2022-11-25 22:27:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:27:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:27:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:27:11,440 INFO L87 Difference]: Start difference. First operand 3041 states and 5173 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) [2022-11-25 22:27:17,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:17,230 INFO L93 Difference]: Finished difference Result 5472 states and 9669 transitions. [2022-11-25 22:27:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:27:17,232 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 [2022-11-25 22:27:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:17,248 INFO L225 Difference]: With dead ends: 5472 [2022-11-25 22:27:17,249 INFO L226 Difference]: Without dead ends: 5472 [2022-11-25 22:27:17,249 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 [2022-11-25 22:27:17,250 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 3438 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:17,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 6500 Invalid, 2890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-25 22:27:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-11-25 22:27:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 3037. [2022-11-25 22:27:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 1648 states have (on average 1.916868932038835) internal successors, (3159), 3031 states have internal predecessors, (3159), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 5165 transitions. [2022-11-25 22:27:17,750 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 5165 transitions. Word has length 34 [2022-11-25 22:27:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:17,751 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 5165 transitions. [2022-11-25 22:27:17,751 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) [2022-11-25 22:27:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 5165 transitions. [2022-11-25 22:27:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 22:27:17,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:17,752 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] [2022-11-25 22:27:17,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:17,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:17,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-25 22:27:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:17,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399368160] [2022-11-25 22:27:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:17,967 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 [2022-11-25 22:27:17,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:17,969 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:18,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:18,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:27:18,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:18,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:27:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:18,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:18,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399368160] [2022-11-25 22:27:18,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399368160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:18,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:18,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:27:18,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486229283] [2022-11-25 22:27:18,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:18,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:27:18,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:27:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:27:18,414 INFO L87 Difference]: Start difference. First operand 3037 states and 5165 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) [2022-11-25 22:27:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:26,180 INFO L93 Difference]: Finished difference Result 5529 states and 9691 transitions. [2022-11-25 22:27:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:27:26,181 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 [2022-11-25 22:27:26,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:26,199 INFO L225 Difference]: With dead ends: 5529 [2022-11-25 22:27:26,199 INFO L226 Difference]: Without dead ends: 5529 [2022-11-25 22:27:26,199 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 [2022-11-25 22:27:26,200 INFO L413 NwaCegarLoop]: 5150 mSDtfsCounter, 2908 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 10076 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:26,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 10076 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-25 22:27:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-11-25 22:27:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 3033. [2022-11-25 22:27:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 1648 states have (on average 1.9120145631067962) internal successors, (3151), 3027 states have internal predecessors, (3151), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5157 transitions. [2022-11-25 22:27:26,875 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5157 transitions. Word has length 34 [2022-11-25 22:27:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:26,876 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 5157 transitions. [2022-11-25 22:27:26,876 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) [2022-11-25 22:27:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5157 transitions. [2022-11-25 22:27:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 22:27:26,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:26,877 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] [2022-11-25 22:27:26,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:27,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:27,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-25 22:27:27,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:27,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007551148] [2022-11-25 22:27:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:27,095 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 [2022-11-25 22:27:27,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:27,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:27,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:27,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:27:27,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:27,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:27,440 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:27,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007551148] [2022-11-25 22:27:27,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007551148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:27,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:27,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:27:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256023859] [2022-11-25 22:27:27,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:27,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:27:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:27:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:27:27,443 INFO L87 Difference]: Start difference. First operand 3033 states and 5157 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) [2022-11-25 22:27:27,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:27,527 INFO L93 Difference]: Finished difference Result 3021 states and 5137 transitions. [2022-11-25 22:27:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:27:27,527 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 [2022-11-25 22:27:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:27,535 INFO L225 Difference]: With dead ends: 3021 [2022-11-25 22:27:27,536 INFO L226 Difference]: Without dead ends: 3021 [2022-11-25 22:27:27,537 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 [2022-11-25 22:27:27,538 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1881 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6312 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 [2022-11-25 22:27:27,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 6312 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:27:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-11-25 22:27:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3021. [2022-11-25 22:27:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 1636 states have (on average 1.9138141809290954) internal successors, (3131), 3015 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 5137 transitions. [2022-11-25 22:27:27,811 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 5137 transitions. Word has length 52 [2022-11-25 22:27:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:27,812 INFO L495 AbstractCegarLoop]: Abstraction has 3021 states and 5137 transitions. [2022-11-25 22:27:27,812 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) [2022-11-25 22:27:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 5137 transitions. [2022-11-25 22:27:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 22:27:27,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:27,813 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] [2022-11-25 22:27:27,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:28,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:28,027 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-25 22:27:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:28,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585340545] [2022-11-25 22:27:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:28,029 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 [2022-11-25 22:27:28,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:28,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:28,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:28,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:27:28,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:28,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 22:27:28,514 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 [2022-11-25 22:27:29,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:29,087 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 [2022-11-25 22:27:29,100 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:27:29,101 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 [2022-11-25 22:27:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:29,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:29,121 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585340545] [2022-11-25 22:27:29,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585340545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:29,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:29,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:27:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907685762] [2022-11-25 22:27:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:29,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:27:29,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:27:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:27:29,122 INFO L87 Difference]: Start difference. First operand 3021 states and 5137 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) [2022-11-25 22:27:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:35,172 INFO L93 Difference]: Finished difference Result 5223 states and 9398 transitions. [2022-11-25 22:27:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:27:35,172 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 [2022-11-25 22:27:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:35,187 INFO L225 Difference]: With dead ends: 5223 [2022-11-25 22:27:35,187 INFO L226 Difference]: Without dead ends: 5223 [2022-11-25 22:27:35,187 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 [2022-11-25 22:27:35,188 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2770 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3773 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:35,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3773 Valid, 4221 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-25 22:27:35,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2022-11-25 22:27:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 2951. [2022-11-25 22:27:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1604 states have (on average 1.8871571072319202) internal successors, (3027), 2945 states have internal predecessors, (3027), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 5033 transitions. [2022-11-25 22:27:35,902 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 5033 transitions. Word has length 60 [2022-11-25 22:27:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:35,903 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 5033 transitions. [2022-11-25 22:27:35,903 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) [2022-11-25 22:27:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 5033 transitions. [2022-11-25 22:27:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:27:35,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:35,905 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] [2022-11-25 22:27:35,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:36,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:36,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-25 22:27:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:36,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923860535] [2022-11-25 22:27:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:36,122 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 [2022-11-25 22:27:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:36,124 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:36,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:36,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:27:36,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:36,495 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 [2022-11-25 22:27:36,512 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 [2022-11-25 22:27:36,547 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 [2022-11-25 22:27:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:36,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:36,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:36,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923860535] [2022-11-25 22:27:36,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923860535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:36,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:36,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:27:36,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224952788] [2022-11-25 22:27:36,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:36,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:27:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:27:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:27:36,562 INFO L87 Difference]: Start difference. First operand 2951 states and 5033 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) [2022-11-25 22:27:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:39,469 INFO L93 Difference]: Finished difference Result 2950 states and 5032 transitions. [2022-11-25 22:27:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:27:39,470 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 [2022-11-25 22:27:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:39,483 INFO L225 Difference]: With dead ends: 2950 [2022-11-25 22:27:39,483 INFO L226 Difference]: Without dead ends: 2950 [2022-11-25 22:27:39,486 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 [2022-11-25 22:27:39,488 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 4 mSDsluCounter, 7345 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10206 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:39,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10206 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 22:27:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-11-25 22:27:39,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2022-11-25 22:27:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1604 states have (on average 1.8865336658354115) internal successors, (3026), 2944 states have internal predecessors, (3026), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5032 transitions. [2022-11-25 22:27:39,842 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5032 transitions. Word has length 65 [2022-11-25 22:27:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:39,843 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 5032 transitions. [2022-11-25 22:27:39,844 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) [2022-11-25 22:27:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5032 transitions. [2022-11-25 22:27:39,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:27:39,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:39,848 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] [2022-11-25 22:27:39,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:40,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:40,063 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-25 22:27:40,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:40,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910460531] [2022-11-25 22:27:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:40,064 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 [2022-11-25 22:27:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:40,066 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:40,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:40,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:27:40,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:40,413 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 [2022-11-25 22:27:40,438 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 [2022-11-25 22:27:40,461 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 [2022-11-25 22:27:40,525 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 [2022-11-25 22:27:40,533 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 [2022-11-25 22:27:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:40,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:40,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:40,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910460531] [2022-11-25 22:27:40,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910460531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:40,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:40,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:27:40,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590594542] [2022-11-25 22:27:40,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:40,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:27:40,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:40,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:27:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:27:40,554 INFO L87 Difference]: Start difference. First operand 2950 states and 5032 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) [2022-11-25 22:27:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:44,411 INFO L93 Difference]: Finished difference Result 2949 states and 5031 transitions. [2022-11-25 22:27:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:27:44,412 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 [2022-11-25 22:27:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:44,423 INFO L225 Difference]: With dead ends: 2949 [2022-11-25 22:27:44,423 INFO L226 Difference]: Without dead ends: 2949 [2022-11-25 22:27:44,423 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 [2022-11-25 22:27:44,424 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:44,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10242 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 22:27:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-11-25 22:27:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-11-25 22:27:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 1603 states have (on average 1.8870867124142234) internal successors, (3025), 2943 states have internal predecessors, (3025), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-25 22:27:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 5031 transitions. [2022-11-25 22:27:44,757 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 5031 transitions. Word has length 65 [2022-11-25 22:27:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:44,758 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 5031 transitions. [2022-11-25 22:27:44,758 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) [2022-11-25 22:27:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 5031 transitions. [2022-11-25 22:27:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 22:27:44,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:44,759 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] [2022-11-25 22:27:44,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:44,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:44,974 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash -517931281, now seen corresponding path program 1 times [2022-11-25 22:27:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:44,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355647171] [2022-11-25 22:27:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:44,976 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 [2022-11-25 22:27:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:44,977 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:44,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:45,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:27:45,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:45,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:45,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:45,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355647171] [2022-11-25 22:27:45,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355647171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:45,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:45,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:27:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684666590] [2022-11-25 22:27:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:45,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:27:45,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:45,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:27:45,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:27:45,377 INFO L87 Difference]: Start difference. First operand 2949 states and 5031 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) [2022-11-25 22:27:45,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:45,456 INFO L93 Difference]: Finished difference Result 2952 states and 5035 transitions. [2022-11-25 22:27:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:27:45,457 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 [2022-11-25 22:27:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:45,470 INFO L225 Difference]: With dead ends: 2952 [2022-11-25 22:27:45,471 INFO L226 Difference]: Without dead ends: 2952 [2022-11-25 22:27:45,471 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 [2022-11-25 22:27:45,472 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8578 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 [2022-11-25 22:27:45,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8578 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:27:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-11-25 22:27:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2022-11-25 22:27:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 1605 states have (on average 1.8866043613707164) internal successors, (3028), 2946 states have internal predecessors, (3028), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-25 22:27:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5035 transitions. [2022-11-25 22:27:45,796 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5035 transitions. Word has length 73 [2022-11-25 22:27:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:45,797 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 5035 transitions. [2022-11-25 22:27:45,797 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) [2022-11-25 22:27:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5035 transitions. [2022-11-25 22:27:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 22:27:45,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:45,798 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] [2022-11-25 22:27:45,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:46,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:46,013 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -563037036, now seen corresponding path program 1 times [2022-11-25 22:27:46,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:46,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333700956] [2022-11-25 22:27:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:46,014 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 [2022-11-25 22:27:46,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:46,015 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:46,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:46,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:27:46,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:46,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:46,483 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:46,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333700956] [2022-11-25 22:27:46,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333700956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:46,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [632153665] [2022-11-25 22:27:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:46,484 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:46,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:46,491 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:46,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-25 22:27:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:47,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:27:47,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:47,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:47,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [632153665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:47,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183408359] [2022-11-25 22:27:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:47,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:47,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:47,191 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:47,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 22:27:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:47,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:27:47,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:47,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:47,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183408359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:47,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:27:47,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-25 22:27:47,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622045194] [2022-11-25 22:27:47,588 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:27:47,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:27:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:27:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:27:47,590 INFO L87 Difference]: Start difference. First operand 2952 states and 5035 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) [2022-11-25 22:27:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:47,849 INFO L93 Difference]: Finished difference Result 2964 states and 5052 transitions. [2022-11-25 22:27:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:27:47,850 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 [2022-11-25 22:27:47,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:47,862 INFO L225 Difference]: With dead ends: 2964 [2022-11-25 22:27:47,862 INFO L226 Difference]: Without dead ends: 2964 [2022-11-25 22:27:47,862 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 [2022-11-25 22:27:47,863 INFO L413 NwaCegarLoop]: 2862 mSDtfsCounter, 9 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:47,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11436 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:27:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-11-25 22:27:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2962. [2022-11-25 22:27:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 1614 states have (on average 1.885377942998761) internal successors, (3043), 2955 states have internal predecessors, (3043), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-25 22:27:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 5050 transitions. [2022-11-25 22:27:48,271 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 5050 transitions. Word has length 74 [2022-11-25 22:27:48,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:48,271 INFO L495 AbstractCegarLoop]: Abstraction has 2962 states and 5050 transitions. [2022-11-25 22:27:48,271 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) [2022-11-25 22:27:48,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 5050 transitions. [2022-11-25 22:27:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 22:27:48,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:48,273 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] [2022-11-25 22:27:48,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 [2022-11-25 22:27:48,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:48,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:48,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:48,888 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:27:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1779056593, now seen corresponding path program 2 times [2022-11-25 22:27:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:48,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353092315] [2022-11-25 22:27:48,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:27:48,890 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 [2022-11-25 22:27:48,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:48,891 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:27:48,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 (22)] Waiting until timeout for monitored process [2022-11-25 22:27:49,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:27:49,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:49,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:27:49,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:49,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:49,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353092315] [2022-11-25 22:27:49,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353092315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [888254769] [2022-11-25 22:27:49,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:27:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:49,772 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:49,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-25 22:27:51,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:27:51,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:51,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:27:51,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:51,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:51,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [888254769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:51,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855872140] [2022-11-25 22:27:51,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:27:51,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:51,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:51,696 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:51,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 22:28:23,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:28:23,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:28:23,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 22:28:23,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:23,896 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 [2022-11-25 22:28:23,912 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:28:23,913 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 [2022-11-25 22:28:23,975 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 [2022-11-25 22:28:23,989 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 [2022-11-25 22:28:24,198 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 [2022-11-25 22:28:24,205 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 [2022-11-25 22:28:24,316 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1619 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1619))) (exists ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1618))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-25 22:28:24,331 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1621))) (exists ((v_ArrVal_1620 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1620))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-25 22:28:24,346 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1623))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-25 22:28:24,368 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1625 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1625) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1624) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-25 22:28:24,435 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:28:24,435 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 [2022-11-25 22:28:24,447 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 [2022-11-25 22:28:24,537 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 [2022-11-25 22:28:24,552 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 [2022-11-25 22:28:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-25 22:28:24,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:24,973 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2022-11-25 22:28:24,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855872140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:28:24,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-25 22:28:24,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-25 22:28:24,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057839794] [2022-11-25 22:28:24,981 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-25 22:28:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 22:28:24,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 22:28:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-11-25 22:28:24,983 INFO L87 Difference]: Start difference. First operand 2962 states and 5050 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) [2022-11-25 22:28:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:52,913 INFO L93 Difference]: Finished difference Result 5225 states and 9378 transitions. [2022-11-25 22:28:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 22:28:52,914 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 [2022-11-25 22:28:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:52,934 INFO L225 Difference]: With dead ends: 5225 [2022-11-25 22:28:52,934 INFO L226 Difference]: Without dead ends: 5219 [2022-11-25 22:28:52,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=421, Invalid=1941, Unknown=10, NotChecked=490, Total=2862 [2022-11-25 22:28:52,936 INFO L413 NwaCegarLoop]: 3063 mSDtfsCounter, 4429 mSDsluCounter, 27949 mSDsCounter, 0 mSdLazyCounter, 9541 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 31012 SdHoareTripleChecker+Invalid, 30976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 9541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20388 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:52,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4929 Valid, 31012 Invalid, 30976 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1047 Valid, 9541 Invalid, 0 Unknown, 20388 Unchecked, 26.0s Time] [2022-11-25 22:28:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2022-11-25 22:28:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 2971. [2022-11-25 22:28:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 1623 states have (on average 1.8817005545286507) internal successors, (3054), 2964 states have internal predecessors, (3054), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-25 22:28:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 5061 transitions. [2022-11-25 22:28:53,457 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 5061 transitions. Word has length 77 [2022-11-25 22:28:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:53,458 INFO L495 AbstractCegarLoop]: Abstraction has 2971 states and 5061 transitions. [2022-11-25 22:28:53,458 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) [2022-11-25 22:28:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 5061 transitions. [2022-11-25 22:28:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-25 22:28:53,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:53,459 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] [2022-11-25 22:28:53,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:53,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 (22)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:53,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:54,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:54,088 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-25 22:28:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:54,091 INFO L85 PathProgramCache]: Analyzing trace with hash -271518193, now seen corresponding path program 3 times [2022-11-25 22:28:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:54,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474138562] [2022-11-25 22:28:54,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:28:54,092 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 [2022-11-25 22:28:54,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:54,093 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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) [2022-11-25 22:28:54,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/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)] Waiting until timeout for monitored process [2022-11-25 22:28:54,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 22:28:54,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:28:54,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:28:54,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:28:55,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:28:56,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474138562] [2022-11-25 22:28:56,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474138562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1381081196] [2022-11-25 22:28:56,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:28:56,072 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:56,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:28:56,073 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:28:56,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-25 22:29:01,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 22:29:01,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:29:01,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:29:01,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:29:01,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:29:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:29:01,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1381081196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:29:01,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015499376] [2022-11-25 22:29:01,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:29:01,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:01,694 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:01,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1142849-cf5e-4823-b6cc-33b568c0e427/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process