./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH --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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:40:19,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:40:19,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:40:19,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:40:19,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:40:19,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:40:19,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:40:19,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:40:19,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:40:19,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:40:19,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:40:19,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:40:19,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:40:19,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:40:19,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:40:19,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:40:19,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:40:19,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:40:19,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:40:19,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:40:19,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:40:19,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:40:19,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:40:19,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:40:19,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:40:19,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:40:19,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:40:19,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:40:19,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:40:19,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:40:19,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:40:19,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:40:19,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:40:19,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:40:19,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:40:19,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:40:19,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:40:19,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:40:19,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:40:19,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:40:19,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:40:19,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:40:19,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:40:19,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:40:19,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:40:19,353 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:40:19,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:40:19,354 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:40:19,354 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:40:19,354 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:40:19,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:40:19,355 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:40:19,355 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:40:19,356 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:40:19,356 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:40:19,357 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:40:19,357 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:40:19,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:40:19,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:40:19,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:40:19,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:40:19,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:40:19,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:40:19,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:40:19,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:40:19,361 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:40:19,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:40:19,362 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:40:19,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:40:19,363 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:40:19,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:40:19,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:40:19,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:40:19,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:40:19,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:40:19,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:40:19,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:40:19,367 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:40:19,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:40:19,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:40:19,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:40:19,369 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-11-03 04:40:19,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:40:19,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:40:19,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:40:19,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:40:19,684 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:40:19,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-03 04:40:19,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/286483a6d/4835149d81c74ee4bfa660cecb27afb8/FLAG664e549eb [2021-11-03 04:40:20,489 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:40:20,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-03 04:40:20,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/286483a6d/4835149d81c74ee4bfa660cecb27afb8/FLAG664e549eb [2021-11-03 04:40:20,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/286483a6d/4835149d81c74ee4bfa660cecb27afb8 [2021-11-03 04:40:20,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:40:20,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:40:20,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:20,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:40:20,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:40:20,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:20" (1/1) ... [2021-11-03 04:40:20,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326916c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:20, skipping insertion in model container [2021-11-03 04:40:20,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:20" (1/1) ... [2021-11-03 04:40:20,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:40:20,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:40:21,263 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-03 04:40:21,612 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-03 04:40:21,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:21,660 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:40:21,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72ebbedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:21, skipping insertion in model container [2021-11-03 04:40:21,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:21,662 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:40:21,665 INFO L168 Benchmark]: Toolchain (without parser) took 1066.22 ms. Allocated memory is still 83.9 MB. Free memory was 57.2 MB in the beginning and 36.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:40:21,667 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 59.4 MB in the beginning and 59.4 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:40:21,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1062.31 ms. Allocated memory is still 83.9 MB. Free memory was 56.9 MB in the beginning and 36.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:40:21,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 59.4 MB in the beginning and 59.4 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1062.31 ms. Allocated memory is still 83.9 MB. Free memory was 56.9 MB in the beginning and 36.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH --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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:40:24,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:40:24,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:40:24,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:40:24,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:40:24,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:40:24,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:40:24,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:40:24,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:40:24,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:40:24,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:40:24,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:40:24,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:40:24,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:40:24,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:40:24,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:40:24,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:40:24,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:40:24,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:40:24,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:40:24,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:40:24,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:40:24,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:40:24,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:40:24,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:40:24,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:40:24,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:40:24,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:40:24,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:40:24,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:40:24,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:40:24,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:40:24,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:40:24,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:40:24,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:40:24,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:40:24,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:40:24,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:40:24,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:40:24,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:40:24,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:40:24,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:40:24,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:40:24,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:40:24,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:40:24,750 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:40:24,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:40:24,751 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:40:24,751 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:40:24,751 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:40:24,751 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:40:24,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:40:24,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:40:24,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:40:24,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:40:24,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:40:24,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:40:24,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:40:24,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:40:24,754 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:40:24,754 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:40:24,754 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:40:24,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:40:24,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:40:24,755 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:40:24,755 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:40:24,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:40:24,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:40:24,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:40:24,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:40:24,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:40:24,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:40:24,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:40:24,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:40:24,757 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:40:24,758 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:24,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:40:24,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:40:24,758 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-11-03 04:40:25,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:40:25,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:40:25,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:40:25,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:40:25,135 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:40:25,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-03 04:40:25,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/7740b8985/29ff023bc7c645428e723206cb391675/FLAG2603a0df4 [2021-11-03 04:40:26,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:40:26,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-03 04:40:26,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/7740b8985/29ff023bc7c645428e723206cb391675/FLAG2603a0df4 [2021-11-03 04:40:26,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/data/7740b8985/29ff023bc7c645428e723206cb391675 [2021-11-03 04:40:26,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:40:26,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:40:26,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:26,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:40:26,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:40:26,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:26" (1/1) ... [2021-11-03 04:40:26,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c072c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:26, skipping insertion in model container [2021-11-03 04:40:26,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:26" (1/1) ... [2021-11-03 04:40:26,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:40:26,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:40:27,236 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-03 04:40:27,561 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-03 04:40:27,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:27,585 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:40:27,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:40:27,626 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-03 04:40:27,726 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-03 04:40:27,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:27,737 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:40:27,762 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-03 04:40:27,857 WARN L228 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_ccba33f8-2a60-49f4-8e8b-150e2e651412/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-03 04:40:27,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:27,905 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:40:27,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27 WrapperNode [2021-11-03 04:40:27,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:27,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:40:27,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:40:27,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:40:27,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:27,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:40:28,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:40:28,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:40:28,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:40:28,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:40:28,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:40:28,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:40:28,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:40:28,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (1/1) ... [2021-11-03 04:40:28,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:40:28,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:28,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:40:28,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:40:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:40:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:40:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:40:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:40:36,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:40:36,763 INFO L299 CfgBuilder]: Removed 1075 assume(true) statements. [2021-11-03 04:40:36,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:40:36 BoogieIcfgContainer [2021-11-03 04:40:36,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:40:36,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:40:36,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:40:36,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:40:36,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:40:26" (1/3) ... [2021-11-03 04:40:36,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4a26a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:40:36, skipping insertion in model container [2021-11-03 04:40:36,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:27" (2/3) ... [2021-11-03 04:40:36,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4a26a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:40:36, skipping insertion in model container [2021-11-03 04:40:36,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:40:36" (3/3) ... [2021-11-03 04:40:36,789 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-2.i [2021-11-03 04:40:36,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:40:36,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1035 error locations. [2021-11-03 04:40:36,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:40:36,850 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:40:36,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1035 error locations. [2021-11-03 04:40:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 3069 states, 2033 states have (on average 2.06345302508608) internal successors, (4195), 3068 states have internal predecessors, (4195), 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) [2021-11-03 04:40:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:40:36,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:36,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:40:36,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 04:40:36,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:36,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796769643] [2021-11-03 04:40:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:36,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:36,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:36,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:36,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:40:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:37,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:37,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:37,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:40:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:37,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:37,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:37,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796769643] [2021-11-03 04:40:37,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796769643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:37,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:37,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:40:37,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697060679] [2021-11-03 04:40:37,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:40:37,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:40:37,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:37,352 INFO L87 Difference]: Start difference. First operand has 3069 states, 2033 states have (on average 2.06345302508608) internal successors, (4195), 3068 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) 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) [2021-11-03 04:40:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:39,624 INFO L93 Difference]: Finished difference Result 3233 states and 3800 transitions. [2021-11-03 04:40:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:39,626 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 [2021-11-03 04:40:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:39,660 INFO L225 Difference]: With dead ends: 3233 [2021-11-03 04:40:39,661 INFO L226 Difference]: Without dead ends: 3231 [2021-11-03 04:40:39,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-11-03 04:40:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3053. [2021-11-03 04:40:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 2033 states have (on average 1.7766847024102312) internal successors, (3612), 3052 states have internal predecessors, (3612), 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) [2021-11-03 04:40:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 3612 transitions. [2021-11-03 04:40:39,789 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 3612 transitions. Word has length 3 [2021-11-03 04:40:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:39,790 INFO L470 AbstractCegarLoop]: Abstraction has 3053 states and 3612 transitions. [2021-11-03 04:40:39,790 INFO L471 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) [2021-11-03 04:40:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 3612 transitions. [2021-11-03 04:40:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:40:39,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:39,791 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:40:39,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:40:39,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:39,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 04:40:39,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:39,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943220719] [2021-11-03 04:40:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:39,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:39,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:40,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:40:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:40,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:40,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:40,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:40:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:40,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:40,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:40,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943220719] [2021-11-03 04:40:40,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943220719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:40,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:40,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:40:40,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121337411] [2021-11-03 04:40:40,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:40,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:40,219 INFO L87 Difference]: Start difference. First operand 3053 states and 3612 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-03 04:40:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:45,195 INFO L93 Difference]: Finished difference Result 5536 states and 6630 transitions. [2021-11-03 04:40:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:45,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 [2021-11-03 04:40:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:45,235 INFO L225 Difference]: With dead ends: 5536 [2021-11-03 04:40:45,235 INFO L226 Difference]: Without dead ends: 5536 [2021-11-03 04:40:45,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-11-03 04:40:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 3088. [2021-11-03 04:40:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 2077 states have (on average 1.7770823302840635) internal successors, (3691), 3087 states have internal predecessors, (3691), 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) [2021-11-03 04:40:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 3691 transitions. [2021-11-03 04:40:45,322 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 3691 transitions. Word has length 3 [2021-11-03 04:40:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:45,323 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 3691 transitions. [2021-11-03 04:40:45,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-03 04:40:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 3691 transitions. [2021-11-03 04:40:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:40:45,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:45,324 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:45,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:45,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:45,535 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-03 04:40:45,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:45,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829743797] [2021-11-03 04:40:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:45,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:45,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:45,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:45,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:40:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:45,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:45,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:45,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:40:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:45,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:45,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:45,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829743797] [2021-11-03 04:40:45,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829743797] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:45,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:45,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:40:45,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095806170] [2021-11-03 04:40:45,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:40:45,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:40:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:45,759 INFO L87 Difference]: Start difference. First operand 3088 states and 3691 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) [2021-11-03 04:40:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:47,669 INFO L93 Difference]: Finished difference Result 5255 states and 6375 transitions. [2021-11-03 04:40:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:47,671 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 [2021-11-03 04:40:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:47,700 INFO L225 Difference]: With dead ends: 5255 [2021-11-03 04:40:47,700 INFO L226 Difference]: Without dead ends: 5255 [2021-11-03 04:40:47,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2021-11-03 04:40:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 3041. [2021-11-03 04:40:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2077 states have (on average 1.7530091478093404) internal successors, (3641), 3040 states have internal predecessors, (3641), 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) [2021-11-03 04:40:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 3641 transitions. [2021-11-03 04:40:47,781 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 3641 transitions. Word has length 8 [2021-11-03 04:40:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:47,782 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 3641 transitions. [2021-11-03 04:40:47,782 INFO L471 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) [2021-11-03 04:40:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 3641 transitions. [2021-11-03 04:40:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:40:47,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:47,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:47,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:47,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:47,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-03 04:40:47,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:47,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339052687] [2021-11-03 04:40:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:47,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:47,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:47,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:48,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:40:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:48,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:48,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:48,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:40:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:48,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:48,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:48,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339052687] [2021-11-03 04:40:48,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339052687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:48,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:48,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:40:48,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748060738] [2021-11-03 04:40:48,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:48,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:48,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:48,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:48,299 INFO L87 Difference]: Start difference. First operand 3041 states and 3641 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-03 04:40:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:51,747 INFO L93 Difference]: Finished difference Result 5285 states and 6369 transitions. [2021-11-03 04:40:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2021-11-03 04:40:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:51,774 INFO L225 Difference]: With dead ends: 5285 [2021-11-03 04:40:51,775 INFO L226 Difference]: Without dead ends: 5285 [2021-11-03 04:40:51,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:51,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2021-11-03 04:40:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 3031. [2021-11-03 04:40:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 2077 states have (on average 1.7467501203659124) internal successors, (3628), 3030 states have internal predecessors, (3628), 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) [2021-11-03 04:40:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 3628 transitions. [2021-11-03 04:40:51,865 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 3628 transitions. Word has length 8 [2021-11-03 04:40:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:51,865 INFO L470 AbstractCegarLoop]: Abstraction has 3031 states and 3628 transitions. [2021-11-03 04:40:51,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-03 04:40:51,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 3628 transitions. [2021-11-03 04:40:51,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:40:51,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:51,867 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:51,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:52,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:52,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr929REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash -939366184, now seen corresponding path program 1 times [2021-11-03 04:40:52,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:52,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067986753] [2021-11-03 04:40:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:52,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:52,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:52,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:40:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:52,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:52,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:52,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:52,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:52,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067986753] [2021-11-03 04:40:52,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067986753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:52,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:52,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:40:52,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406944365] [2021-11-03 04:40:52,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:40:52,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:40:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:52,389 INFO L87 Difference]: Start difference. First operand 3031 states and 3628 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) [2021-11-03 04:40:52,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:52,755 INFO L93 Difference]: Finished difference Result 5494 states and 6625 transitions. [2021-11-03 04:40:52,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:52,756 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 [2021-11-03 04:40:52,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:52,793 INFO L225 Difference]: With dead ends: 5494 [2021-11-03 04:40:52,793 INFO L226 Difference]: Without dead ends: 5494 [2021-11-03 04:40:52,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2021-11-03 04:40:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 4201. [2021-11-03 04:40:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 3247 states have (on average 1.823221435170927) internal successors, (5920), 4200 states have internal predecessors, (5920), 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) [2021-11-03 04:40:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 5920 transitions. [2021-11-03 04:40:52,948 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 5920 transitions. Word has length 11 [2021-11-03 04:40:52,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:52,949 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 5920 transitions. [2021-11-03 04:40:52,949 INFO L471 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) [2021-11-03 04:40:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 5920 transitions. [2021-11-03 04:40:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:40:52,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:52,951 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:52,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:53,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:53,162 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1258779124, now seen corresponding path program 1 times [2021-11-03 04:40:53,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:53,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627022981] [2021-11-03 04:40:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:53,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:53,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:53,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:53,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:40:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:53,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:53,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:53,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:53,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:53,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627022981] [2021-11-03 04:40:53,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627022981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:53,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:53,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:40:53,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427084757] [2021-11-03 04:40:53,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:53,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:53,406 INFO L87 Difference]: Start difference. First operand 4201 states and 5920 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:53,466 INFO L93 Difference]: Finished difference Result 4355 states and 6060 transitions. [2021-11-03 04:40:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:53,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:40:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:53,483 INFO L225 Difference]: With dead ends: 4355 [2021-11-03 04:40:53,483 INFO L226 Difference]: Without dead ends: 4355 [2021-11-03 04:40:53,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2021-11-03 04:40:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 4141. [2021-11-03 04:40:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 3211 states have (on average 1.816879476798505) internal successors, (5834), 4140 states have internal predecessors, (5834), 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) [2021-11-03 04:40:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 5834 transitions. [2021-11-03 04:40:53,592 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 5834 transitions. Word has length 13 [2021-11-03 04:40:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:53,592 INFO L470 AbstractCegarLoop]: Abstraction has 4141 states and 5834 transitions. [2021-11-03 04:40:53,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:53,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 5834 transitions. [2021-11-03 04:40:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:40:53,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:53,593 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:53,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:53,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:53,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr931REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1362482859, now seen corresponding path program 1 times [2021-11-03 04:40:53,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:53,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238152868] [2021-11-03 04:40:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:53,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:53,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:53,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:40:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:53,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:40:53,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:54,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:54,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:54,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238152868] [2021-11-03 04:40:54,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238152868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:54,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:54,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:40:54,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513716556] [2021-11-03 04:40:54,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:54,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:54,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:54,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:54,171 INFO L87 Difference]: Start difference. First operand 4141 states and 5834 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) [2021-11-03 04:40:54,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:54,772 INFO L93 Difference]: Finished difference Result 5412 states and 6541 transitions. [2021-11-03 04:40:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:40:54,773 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 [2021-11-03 04:40:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:54,783 INFO L225 Difference]: With dead ends: 5412 [2021-11-03 04:40:54,783 INFO L226 Difference]: Without dead ends: 5412 [2021-11-03 04:40:54,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:40:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2021-11-03 04:40:54,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 4143. [2021-11-03 04:40:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 3213 states have (on average 1.816370992841581) internal successors, (5836), 4142 states have internal predecessors, (5836), 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) [2021-11-03 04:40:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5836 transitions. [2021-11-03 04:40:54,916 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5836 transitions. Word has length 14 [2021-11-03 04:40:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:54,916 INFO L470 AbstractCegarLoop]: Abstraction has 4143 states and 5836 transitions. [2021-11-03 04:40:54,917 INFO L471 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) [2021-11-03 04:40:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5836 transitions. [2021-11-03 04:40:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:40:54,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:54,918 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:54,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:55,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:55,129 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1034ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:55,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:55,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1362489641, now seen corresponding path program 1 times [2021-11-03 04:40:55,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:55,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305087559] [2021-11-03 04:40:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:55,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:55,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:55,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:55,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:40:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:55,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:55,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:55,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:40:55,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:40:55,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:40:55,401 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 04:40:55,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 04:40:55,473 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 04:40:55,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 23 [2021-11-03 04:40:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:55,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:55,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:55,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305087559] [2021-11-03 04:40:55,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305087559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:55,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:55,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:40:55,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770802999] [2021-11-03 04:40:55,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:40:55,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:40:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:40:55,575 INFO L87 Difference]: Start difference. First operand 4143 states and 5836 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-03 04:40:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:57,670 INFO L93 Difference]: Finished difference Result 7460 states and 10684 transitions. [2021-11-03 04:40:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:57,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 [2021-11-03 04:40:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:57,685 INFO L225 Difference]: With dead ends: 7460 [2021-11-03 04:40:57,685 INFO L226 Difference]: Without dead ends: 7460 [2021-11-03 04:40:57,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:40:57,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7460 states. [2021-11-03 04:40:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7460 to 4142. [2021-11-03 04:40:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 3212 states have (on average 1.8163138231631382) internal successors, (5834), 4141 states have internal predecessors, (5834), 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) [2021-11-03 04:40:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 5834 transitions. [2021-11-03 04:40:57,774 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 5834 transitions. Word has length 14 [2021-11-03 04:40:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:57,775 INFO L470 AbstractCegarLoop]: Abstraction has 4142 states and 5834 transitions. [2021-11-03 04:40:57,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-03 04:40:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 5834 transitions. [2021-11-03 04:40:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:40:57,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:57,777 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:57,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:57,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:57,989 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-03 04:40:57,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:57,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283537675] [2021-11-03 04:40:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:57,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:57,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:57,992 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:58,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:40:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:58,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:58,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:58,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:58,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:58,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283537675] [2021-11-03 04:40:58,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283537675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:58,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:58,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:40:58,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076387194] [2021-11-03 04:40:58,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:58,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:58,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:58,275 INFO L87 Difference]: Start difference. First operand 4142 states and 5834 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) [2021-11-03 04:40:58,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:58,319 INFO L93 Difference]: Finished difference Result 4082 states and 5748 transitions. [2021-11-03 04:40:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:58,319 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 18 [2021-11-03 04:40:58,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:58,327 INFO L225 Difference]: With dead ends: 4082 [2021-11-03 04:40:58,327 INFO L226 Difference]: Without dead ends: 4082 [2021-11-03 04:40:58,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-03 04:40:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 4082. [2021-11-03 04:40:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 3176 states have (on average 1.809823677581864) internal successors, (5748), 4081 states have internal predecessors, (5748), 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) [2021-11-03 04:40:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 5748 transitions. [2021-11-03 04:40:58,390 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 5748 transitions. Word has length 18 [2021-11-03 04:40:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:58,391 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 5748 transitions. [2021-11-03 04:40:58,391 INFO L471 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) [2021-11-03 04:40:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 5748 transitions. [2021-11-03 04:40:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:40:58,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:58,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:58,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:58,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:58,603 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-03 04:40:58,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:58,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876002650] [2021-11-03 04:40:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:58,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:58,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:58,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:58,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:40:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:58,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:58,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:58,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:58,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:58,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876002650] [2021-11-03 04:40:58,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876002650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:58,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:58,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:40:58,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717579788] [2021-11-03 04:40:58,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:40:58,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:58,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:40:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:40:58,905 INFO L87 Difference]: Start difference. First operand 4082 states and 5748 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-03 04:40:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:59,009 INFO L93 Difference]: Finished difference Result 4054 states and 5692 transitions. [2021-11-03 04:40:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:59,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 [2021-11-03 04:40:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:59,018 INFO L225 Difference]: With dead ends: 4054 [2021-11-03 04:40:59,018 INFO L226 Difference]: Without dead ends: 4054 [2021-11-03 04:40:59,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:40:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2021-11-03 04:40:59,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 4052. [2021-11-03 04:40:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 3160 states have (on average 1.8006329113924051) internal successors, (5690), 4051 states have internal predecessors, (5690), 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) [2021-11-03 04:40:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 5690 transitions. [2021-11-03 04:40:59,078 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 5690 transitions. Word has length 20 [2021-11-03 04:40:59,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:59,079 INFO L470 AbstractCegarLoop]: Abstraction has 4052 states and 5690 transitions. [2021-11-03 04:40:59,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-03 04:40:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 5690 transitions. [2021-11-03 04:40:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:40:59,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:59,080 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:40:59,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:59,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:59,292 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:40:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:59,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-03 04:40:59,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:59,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893632529] [2021-11-03 04:40:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:59,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:59,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:59,294 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:59,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:40:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:59,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:59,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:59,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:40:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:59,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:59,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:59,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893632529] [2021-11-03 04:40:59,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893632529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:59,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:59,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:40:59,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108910674] [2021-11-03 04:40:59,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:59,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:59,764 INFO L87 Difference]: Start difference. First operand 4052 states and 5690 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) [2021-11-03 04:41:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:01,658 INFO L93 Difference]: Finished difference Result 7487 states and 10689 transitions. [2021-11-03 04:41:01,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:41:01,659 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 [2021-11-03 04:41:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:01,673 INFO L225 Difference]: With dead ends: 7487 [2021-11-03 04:41:01,673 INFO L226 Difference]: Without dead ends: 7487 [2021-11-03 04:41:01,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:41:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2021-11-03 04:41:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 4048. [2021-11-03 04:41:01,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 3160 states have (on average 1.7981012658227848) internal successors, (5682), 4047 states have internal predecessors, (5682), 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) [2021-11-03 04:41:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5682 transitions. [2021-11-03 04:41:01,751 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5682 transitions. Word has length 34 [2021-11-03 04:41:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:01,753 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 5682 transitions. [2021-11-03 04:41:01,753 INFO L471 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) [2021-11-03 04:41:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5682 transitions. [2021-11-03 04:41:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:41:01,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:01,758 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:41:01,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:01,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:01,970 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-03 04:41:01,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:01,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745980968] [2021-11-03 04:41:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:01,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:01,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:01,972 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:02,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:41:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:02,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:02,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:02,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:41:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:02,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:03,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:03,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745980968] [2021-11-03 04:41:03,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745980968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:03,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:03,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:41:03,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031936670] [2021-11-03 04:41:03,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:41:03,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:03,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:41:03,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:41:03,026 INFO L87 Difference]: Start difference. First operand 4048 states and 5682 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-03 04:41:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:09,434 INFO L93 Difference]: Finished difference Result 7541 states and 10706 transitions. [2021-11-03 04:41:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:41:09,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 [2021-11-03 04:41:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:09,456 INFO L225 Difference]: With dead ends: 7541 [2021-11-03 04:41:09,456 INFO L226 Difference]: Without dead ends: 7541 [2021-11-03 04:41:09,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:41:09,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7541 states. [2021-11-03 04:41:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7541 to 4044. [2021-11-03 04:41:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 3160 states have (on average 1.7955696202531646) internal successors, (5674), 4043 states have internal predecessors, (5674), 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) [2021-11-03 04:41:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 5674 transitions. [2021-11-03 04:41:09,549 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 5674 transitions. Word has length 34 [2021-11-03 04:41:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:09,549 INFO L470 AbstractCegarLoop]: Abstraction has 4044 states and 5674 transitions. [2021-11-03 04:41:09,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-03 04:41:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 5674 transitions. [2021-11-03 04:41:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:41:09,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:09,552 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:41:09,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:09,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:09,767 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:09,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash -489765179, now seen corresponding path program 1 times [2021-11-03 04:41:09,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:09,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715744678] [2021-11-03 04:41:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:09,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:09,770 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:09,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:41:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:10,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:41:10,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:10,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:10,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:10,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715744678] [2021-11-03 04:41:10,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715744678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:10,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:10,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:41:10,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971513711] [2021-11-03 04:41:10,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:41:10,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:41:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:41:10,400 INFO L87 Difference]: Start difference. First operand 4044 states and 5674 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) [2021-11-03 04:41:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:10,478 INFO L93 Difference]: Finished difference Result 4032 states and 5654 transitions. [2021-11-03 04:41:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:41:10,478 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 [2021-11-03 04:41:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:10,483 INFO L225 Difference]: With dead ends: 4032 [2021-11-03 04:41:10,484 INFO L226 Difference]: Without dead ends: 4032 [2021-11-03 04:41:10,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:41:10,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2021-11-03 04:41:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 4032. [2021-11-03 04:41:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 3148 states have (on average 1.7960609911054637) internal successors, (5654), 4031 states have internal predecessors, (5654), 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) [2021-11-03 04:41:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5654 transitions. [2021-11-03 04:41:10,543 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5654 transitions. Word has length 52 [2021-11-03 04:41:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 5654 transitions. [2021-11-03 04:41:10,545 INFO L471 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) [2021-11-03 04:41:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5654 transitions. [2021-11-03 04:41:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:41:10,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:10,548 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:41:10,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:10,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:10,765 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:10,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:10,766 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-03 04:41:10,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:10,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951157866] [2021-11-03 04:41:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:10,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:10,769 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:10,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:41:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:11,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:41:11,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:11,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:41:11,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:41:12,025 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:41:12,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-03 04:41:12,032 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:41:12,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 25 [2021-11-03 04:41:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:12,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:17,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:17,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951157866] [2021-11-03 04:41:17,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951157866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:17,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:17,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:41:17,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220090250] [2021-11-03 04:41:17,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:41:17,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:41:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 04:41:17,111 INFO L87 Difference]: Start difference. First operand 4032 states and 5654 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-03 04:41:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:29,399 INFO L93 Difference]: Finished difference Result 7235 states and 10415 transitions. [2021-11-03 04:41:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:41:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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 [2021-11-03 04:41:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:29,407 INFO L225 Difference]: With dead ends: 7235 [2021-11-03 04:41:29,407 INFO L226 Difference]: Without dead ends: 7235 [2021-11-03 04:41:29,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 04:41:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7235 states. [2021-11-03 04:41:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7235 to 3994. [2021-11-03 04:41:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3148 states have (on average 1.7839898348157561) internal successors, (5616), 3993 states have internal predecessors, (5616), 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) [2021-11-03 04:41:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5616 transitions. [2021-11-03 04:41:29,479 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5616 transitions. Word has length 60 [2021-11-03 04:41:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:29,479 INFO L470 AbstractCegarLoop]: Abstraction has 3994 states and 5616 transitions. [2021-11-03 04:41:29,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-03 04:41:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5616 transitions. [2021-11-03 04:41:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:41:29,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:29,480 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:41:29,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:29,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:29,695 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-03 04:41:29,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:29,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7460506] [2021-11-03 04:41:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:29,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:29,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:29,697 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:41:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:30,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:30,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:30,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:41:30,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2021-11-03 04:41:30,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 14 [2021-11-03 04:41:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:30,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:30,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:30,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7460506] [2021-11-03 04:41:30,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7460506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:30,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:30,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:41:30,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014312127] [2021-11-03 04:41:30,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:41:30,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:41:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:41:30,485 INFO L87 Difference]: Start difference. First operand 3994 states and 5616 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-11-03 04:41:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:34,992 INFO L93 Difference]: Finished difference Result 7626 states and 10821 transitions. [2021-11-03 04:41:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:41:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 66 [2021-11-03 04:41:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:35,001 INFO L225 Difference]: With dead ends: 7626 [2021-11-03 04:41:35,001 INFO L226 Difference]: Without dead ends: 7626 [2021-11-03 04:41:35,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:41:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2021-11-03 04:41:35,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 3993. [2021-11-03 04:41:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3993 states, 3148 states have (on average 1.7836721728081322) internal successors, (5615), 3992 states have internal predecessors, (5615), 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) [2021-11-03 04:41:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 5615 transitions. [2021-11-03 04:41:35,072 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 5615 transitions. Word has length 66 [2021-11-03 04:41:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:35,073 INFO L470 AbstractCegarLoop]: Abstraction has 3993 states and 5615 transitions. [2021-11-03 04:41:35,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-11-03 04:41:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 5615 transitions. [2021-11-03 04:41:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:41:35,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:35,074 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:41:35,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:35,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:35,288 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-03 04:41:35,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:35,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547438221] [2021-11-03 04:41:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:35,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:35,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:35,291 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:35,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:41:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:35,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:41:35,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:35,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:41:35,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2021-11-03 04:41:35,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:41:35,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 27 [2021-11-03 04:41:35,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 12 [2021-11-03 04:41:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:36,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:36,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:36,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547438221] [2021-11-03 04:41:36,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547438221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:36,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:36,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:41:36,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022415680] [2021-11-03 04:41:36,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:41:36,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:41:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:41:36,472 INFO L87 Difference]: Start difference. First operand 3993 states and 5615 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 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) [2021-11-03 04:41:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:50,016 INFO L93 Difference]: Finished difference Result 7477 states and 10635 transitions. [2021-11-03 04:41:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:41:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 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 67 [2021-11-03 04:41:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:50,024 INFO L225 Difference]: With dead ends: 7477 [2021-11-03 04:41:50,024 INFO L226 Difference]: Without dead ends: 7477 [2021-11-03 04:41:50,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:41:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2021-11-03 04:41:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 3992. [2021-11-03 04:41:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3148 states have (on average 1.7833545108005082) internal successors, (5614), 3991 states have internal predecessors, (5614), 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) [2021-11-03 04:41:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5614 transitions. [2021-11-03 04:41:50,093 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5614 transitions. Word has length 67 [2021-11-03 04:41:50,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:50,093 INFO L470 AbstractCegarLoop]: Abstraction has 3992 states and 5614 transitions. [2021-11-03 04:41:50,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 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) [2021-11-03 04:41:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5614 transitions. [2021-11-03 04:41:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:41:50,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:50,094 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:41:50,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:50,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:50,308 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-03 04:41:50,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:50,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219338752] [2021-11-03 04:41:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:50,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:50,311 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:50,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:41:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:50,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:41:50,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:50,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:51,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:51,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219338752] [2021-11-03 04:41:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219338752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:51,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:41:51,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714037779] [2021-11-03 04:41:51,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:41:51,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:41:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:41:51,093 INFO L87 Difference]: Start difference. First operand 3992 states and 5614 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-03 04:41:51,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:51,353 INFO L93 Difference]: Finished difference Result 7635 states and 10829 transitions. [2021-11-03 04:41:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:41:51,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 71 [2021-11-03 04:41:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:51,362 INFO L225 Difference]: With dead ends: 7635 [2021-11-03 04:41:51,362 INFO L226 Difference]: Without dead ends: 7635 [2021-11-03 04:41:51,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:41:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2021-11-03 04:41:51,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 3995. [2021-11-03 04:41:51,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3151 states have (on average 1.7826086956521738) internal successors, (5617), 3994 states have internal predecessors, (5617), 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) [2021-11-03 04:41:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 5617 transitions. [2021-11-03 04:41:51,429 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 5617 transitions. Word has length 71 [2021-11-03 04:41:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:51,429 INFO L470 AbstractCegarLoop]: Abstraction has 3995 states and 5617 transitions. [2021-11-03 04:41:51,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-03 04:41:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 5617 transitions. [2021-11-03 04:41:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:41:51,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:51,430 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:51,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:51,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:51,645 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:51,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-03 04:41:51,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:51,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780257363] [2021-11-03 04:41:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:51,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:51,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:51,647 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:51,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:41:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:52,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:52,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:52,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:52,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:52,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780257363] [2021-11-03 04:41:52,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780257363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:52,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1840476709] [2021-11-03 04:41:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:52,624 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:41:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:41:52,626 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:41:52,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 04:41:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:53,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:53,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:53,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1840476709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:53,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018248470] [2021-11-03 04:41:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:53,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:53,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:53,639 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:41:53,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 04:41:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:54,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:54,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:54,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:54,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018248470] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:54,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:41:54,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:41:54,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501242877] [2021-11-03 04:41:54,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:41:54,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:41:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:41:54,649 INFO L87 Difference]: Start difference. First operand 3995 states and 5617 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-03 04:41:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:55,062 INFO L93 Difference]: Finished difference Result 7641 states and 10835 transitions. [2021-11-03 04:41:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:41:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 73 [2021-11-03 04:41:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:55,069 INFO L225 Difference]: With dead ends: 7641 [2021-11-03 04:41:55,069 INFO L226 Difference]: Without dead ends: 7641 [2021-11-03 04:41:55,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:41:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7641 states. [2021-11-03 04:41:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7641 to 4001. [2021-11-03 04:41:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3157 states have (on average 1.7811213177066836) internal successors, (5623), 4000 states have internal predecessors, (5623), 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) [2021-11-03 04:41:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5623 transitions. [2021-11-03 04:41:55,157 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5623 transitions. Word has length 73 [2021-11-03 04:41:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:55,157 INFO L470 AbstractCegarLoop]: Abstraction has 4001 states and 5623 transitions. [2021-11-03 04:41:55,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-03 04:41:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5623 transitions. [2021-11-03 04:41:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:41:55,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:55,164 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:55,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:55,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:55,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:55,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:55,769 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1031 more)] === [2021-11-03 04:41:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-03 04:41:55,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:55,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220283944] [2021-11-03 04:41:55,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:41:55,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:55,770 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:55,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:41:56,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:41:56,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:41:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:41:56,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:56,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:57,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:57,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220283944] [2021-11-03 04:41:57,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220283944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:57,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1118869156] [2021-11-03 04:41:57,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:41:57,567 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:41:57,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:41:57,568 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:41:57,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:41:58,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:41:58,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:41:58,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:41:58,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:59,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:59,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1118869156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:59,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514722124] [2021-11-03 04:41:59,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:41:59,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:59,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:59,261 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:41:59,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccba33f8-2a60-49f4-8e8b-150e2e651412/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-03 04:42:33,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:42:33,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:42:33,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 04:42:33,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:42:33,916 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:42:33,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2021-11-03 04:42:33,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:42:34,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-11-03 04:42:34,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:42:34,420 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 04:42:34,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-03 04:42:34,450 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:42:34,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-03 04:42:35,269 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:42:35,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:42:35,315 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:42:35,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:42:36,144 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:42:36,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:42:36,912 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:42:36,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:42:37,146 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:42:37,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:42:37,883 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:42:37,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:42:38,461 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:42:38,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:42:39,435 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:42:39,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:42:39,671 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:42:39,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-03 04:42:41,580 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-03 04:42:41,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 101 [2021-11-03 04:42:41,996 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 04:42:42,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-03 04:42:42,011 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 04:42:42,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-03 04:42:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:42:42,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:43:29,913 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr239| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1) (bvadd v_subst_7 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse2 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr239| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse4 (bvadd v_subst_8 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3))) c_ULTIMATE.start_main_~user~0.base) .cse5) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse5)))))) is different from false