./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V --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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:50:57,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:50:57,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:50:57,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:50:57,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:50:57,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:50:57,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:50:57,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:50:57,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:50:57,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:50:57,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:50:57,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:50:57,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:50:57,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:50:57,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:50:57,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:50:57,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:50:57,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:50:57,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:50:57,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:50:57,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:50:57,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:50:57,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:50:57,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:50:57,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:50:57,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:50:57,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:50:57,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:50:57,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:50:57,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:50:57,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:50:57,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:50:57,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:50:57,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:50:57,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:50:57,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:50:57,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:50:57,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:50:57,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:50:57,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:50:57,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:50:57,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 01:50:57,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:50:57,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:50:57,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:50:57,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:50:57,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:50:57,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:50:57,360 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:50:57,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:50:57,361 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:50:57,361 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:50:57,362 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:50:57,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:50:57,363 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:50:57,363 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:50:57,363 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:50:57,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:50:57,364 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:50:57,364 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:50:57,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:50:57,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:50:57,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:50:57,366 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:50:57,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:50:57,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:50:57,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:50:57,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:50:57,367 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 01:50:57,367 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 01:50:57,367 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 01:50:57,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:50:57,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 01:50:57,368 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:50:57,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:50:57,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:50:57,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:50:57,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:50:57,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:50:57,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:50:57,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:50:57,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:50:57,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:50:57,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:50:57,373 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2021-11-23 01:50:57,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:50:57,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:50:57,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:50:57,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:50:57,694 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:50:57,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-23 01:50:57,787 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/4020358c4/143ebb428ee74c0d87bf36c022a061dc/FLAG2abc8c79c [2021-11-23 01:50:58,439 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:50:58,440 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-23 01:50:58,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/4020358c4/143ebb428ee74c0d87bf36c022a061dc/FLAG2abc8c79c [2021-11-23 01:50:58,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/4020358c4/143ebb428ee74c0d87bf36c022a061dc [2021-11-23 01:50:58,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:50:58,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:50:58,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:50:58,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:50:58,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:50:58,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:58,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40704a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58, skipping insertion in model container [2021-11-23 01:50:58,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:58,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:50:58,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:50:59,445 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-11-23 01:50:59,472 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-11-23 01:50:59,615 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-11-23 01:50:59,632 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-11-23 01:50:59,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:50:59,660 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) [2021-11-23 01:50:59,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@700726d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:59, skipping insertion in model container [2021-11-23 01:50:59,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:50:59,669 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 01:50:59,671 INFO L158 Benchmark]: Toolchain (without parser) took 1001.67ms. Allocated memory is still 104.9MB. Free memory was 66.6MB in the beginning and 70.8MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 01:50:59,676 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:50:59,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 987.03ms. Allocated memory is still 104.9MB. Free memory was 66.6MB in the beginning and 70.8MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 01:50:59,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 987.03ms. Allocated memory is still 104.9MB. Free memory was 66.6MB in the beginning and 70.8MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V --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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:51:02,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:51:02,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:51:02,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:51:02,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:51:02,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:51:02,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:51:02,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:51:02,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:51:02,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:51:02,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:51:02,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:51:02,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:51:02,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:51:02,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:51:02,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:51:02,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:51:02,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:51:02,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:51:02,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:51:02,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:51:02,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:51:02,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:51:02,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:51:02,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:51:02,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:51:02,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:51:02,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:51:02,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:51:02,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:51:02,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:51:02,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:51:02,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:51:02,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:51:02,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:51:02,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:51:02,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:51:02,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:51:02,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:51:02,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:51:02,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:51:02,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 01:51:02,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:51:02,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:51:02,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:51:02,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:51:02,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:51:02,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:51:02,896 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:51:02,896 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:51:02,897 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:51:02,897 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:51:02,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:51:02,899 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:51:02,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:51:02,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:51:02,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:51:02,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:51:02,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:51:02,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:51:02,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:51:02,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:51:02,903 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 01:51:02,904 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 01:51:02,904 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 01:51:02,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:51:02,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 01:51:02,905 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 01:51:02,905 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 01:51:02,905 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:51:02,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:51:02,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:51:02,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:51:02,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:51:02,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:02,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:51:02,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:51:02,908 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 01:51:02,908 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 01:51:02,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:51:02,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:51:02,909 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2021-11-23 01:51:03,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:51:03,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:51:03,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:51:03,447 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:51:03,448 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:51:03,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-23 01:51:03,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/06a75f5c5/0dde2fc820034501a02f5cd83a1b2c61/FLAG8bf32339c [2021-11-23 01:51:04,510 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:51:04,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-11-23 01:51:04,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/06a75f5c5/0dde2fc820034501a02f5cd83a1b2c61/FLAG8bf32339c [2021-11-23 01:51:04,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/data/06a75f5c5/0dde2fc820034501a02f5cd83a1b2c61 [2021-11-23 01:51:04,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:51:04,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:51:04,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:04,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:51:04,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:51:04,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:04" (1/1) ... [2021-11-23 01:51:04,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509bce15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:04, skipping insertion in model container [2021-11-23 01:51:04,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:04" (1/1) ... [2021-11-23 01:51:04,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:51:04,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:51:05,427 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-11-23 01:51:05,442 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-11-23 01:51:05,628 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-11-23 01:51:05,630 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-11-23 01:51:05,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:05,659 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 01:51:05,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:51:05,739 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-11-23 01:51:05,742 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-11-23 01:51:05,841 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-11-23 01:51:05,843 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-11-23 01:51:05,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:05,856 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:51:05,901 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-11-23 01:51:05,905 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-11-23 01:51:05,985 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-11-23 01:51:05,987 WARN L230 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_3109db4e-d1a2-4a51-aa53-f840746fd6c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-11-23 01:51:05,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:06,105 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:51:06,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06 WrapperNode [2021-11-23 01:51:06,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:06,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:06,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:51:06,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:51:06,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,252 INFO L137 Inliner]: procedures = 285, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1042 [2021-11-23 01:51:06,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:06,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:51:06,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:51:06,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:51:06,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:51:06,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:51:06,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:51:06,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:51:06,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (1/1) ... [2021-11-23 01:51:06,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:06,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:51:06,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:51:06,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:51:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 01:51:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 01:51:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:51:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 01:51:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:51:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:51:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 01:51:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 01:51:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-23 01:51:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-23 01:51:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 01:51:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 01:51:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:51:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:51:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-23 01:51:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-23 01:51:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:51:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-23 01:51:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-23 01:51:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:51:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:51:06,878 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:51:06,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:51:13,242 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:51:13,270 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:51:13,272 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-23 01:51:13,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:13 BoogieIcfgContainer [2021-11-23 01:51:13,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:51:13,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:51:13,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:51:13,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:51:13,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:51:04" (1/3) ... [2021-11-23 01:51:13,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564b2826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:13, skipping insertion in model container [2021-11-23 01:51:13,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:06" (2/3) ... [2021-11-23 01:51:13,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564b2826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:13, skipping insertion in model container [2021-11-23 01:51:13,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:13" (3/3) ... [2021-11-23 01:51:13,294 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2021-11-23 01:51:13,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:51:13,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2021-11-23 01:51:13,379 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:51:13,390 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 [2021-11-23 01:51:13,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2021-11-23 01:51:13,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 01:51:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 01:51:13,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:13,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 01:51:13,450 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:13,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2021-11-23 01:51:13,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:13,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550285867] [2021-11-23 01:51:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:13,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:13,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:13,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:13,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 01:51:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:13,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 01:51:13,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:13,806 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 [2021-11-23 01:51:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:13,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:13,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:13,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550285867] [2021-11-23 01:51:13,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550285867] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:13,892 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:13,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 01:51:13,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533480581] [2021-11-23 01:51:13,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:13,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:13,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:13,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:13,987 INFO L87 Difference]: Start difference. First operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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) [2021-11-23 01:51:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:16,689 INFO L93 Difference]: Finished difference Result 1162 states and 1229 transitions. [2021-11-23 01:51:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:16,692 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 [2021-11-23 01:51:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:16,720 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 01:51:16,721 INFO L226 Difference]: Without dead ends: 1160 [2021-11-23 01:51:16,723 INFO L932 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 [2021-11-23 01:51:16,728 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 714 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:16,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 1044 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 01:51:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-23 01:51:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1103. [2021-11-23 01:51:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 568 states have (on average 2.084507042253521) internal successors, (1184), 1086 states have internal predecessors, (1184), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1210 transitions. [2021-11-23 01:51:16,847 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1210 transitions. Word has length 3 [2021-11-23 01:51:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:16,848 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 1210 transitions. [2021-11-23 01:51:16,848 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) [2021-11-23 01:51:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1210 transitions. [2021-11-23 01:51:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 01:51:16,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:16,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 01:51:16,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 01:51:17,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:17,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2021-11-23 01:51:17,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:17,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540392254] [2021-11-23 01:51:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:17,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:17,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:17,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:17,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 01:51:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:17,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:51:17,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:17,255 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 [2021-11-23 01:51:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:17,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:17,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:17,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540392254] [2021-11-23 01:51:17,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540392254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:17,345 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:17,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 01:51:17,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557785351] [2021-11-23 01:51:17,346 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:17,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:51:17,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:51:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:51:17,349 INFO L87 Difference]: Start difference. First operand 1103 states and 1210 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) [2021-11-23 01:51:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:23,527 INFO L93 Difference]: Finished difference Result 1533 states and 1633 transitions. [2021-11-23 01:51:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:51:23,528 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 [2021-11-23 01:51:23,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:23,539 INFO L225 Difference]: With dead ends: 1533 [2021-11-23 01:51:23,539 INFO L226 Difference]: Without dead ends: 1533 [2021-11-23 01:51:23,540 INFO L932 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 [2021-11-23 01:51:23,546 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 1124 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:23,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 1632 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 01:51:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-11-23 01:51:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1099. [2021-11-23 01:51:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 573 states have (on average 2.0593368237347294) internal successors, (1180), 1082 states have internal predecessors, (1180), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1206 transitions. [2021-11-23 01:51:23,611 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1206 transitions. Word has length 3 [2021-11-23 01:51:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:23,612 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1206 transitions. [2021-11-23 01:51:23,612 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) [2021-11-23 01:51:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1206 transitions. [2021-11-23 01:51:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:51:23,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:23,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:23,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:23,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:23,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2021-11-23 01:51:23,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:23,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808891483] [2021-11-23 01:51:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:23,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:23,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:23,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 01:51:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:24,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:51:24,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:24,028 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 [2021-11-23 01:51:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:24,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:24,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:24,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808891483] [2021-11-23 01:51:24,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808891483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:24,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:24,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 01:51:24,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689087632] [2021-11-23 01:51:24,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:24,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:51:24,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:51:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:51:24,123 INFO L87 Difference]: Start difference. First operand 1099 states and 1206 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-23 01:51:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:28,672 INFO L93 Difference]: Finished difference Result 1871 states and 2002 transitions. [2021-11-23 01:51:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:51:28,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-11-23 01:51:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:28,688 INFO L225 Difference]: With dead ends: 1871 [2021-11-23 01:51:28,688 INFO L226 Difference]: Without dead ends: 1871 [2021-11-23 01:51:28,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:51:28,691 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 2128 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:28,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2134 Valid, 1948 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 01:51:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2021-11-23 01:51:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1054. [2021-11-23 01:51:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 573 states have (on average 1.975567190226876) internal successors, (1132), 1037 states have internal predecessors, (1132), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1158 transitions. [2021-11-23 01:51:28,737 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1158 transitions. Word has length 9 [2021-11-23 01:51:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:28,738 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1158 transitions. [2021-11-23 01:51:28,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-23 01:51:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1158 transitions. [2021-11-23 01:51:28,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:51:28,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:28,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:28,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:28,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:28,953 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2021-11-23 01:51:28,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:28,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935997654] [2021-11-23 01:51:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:28,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:28,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:28,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 01:51:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:29,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:51:29,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:29,148 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 [2021-11-23 01:51:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:29,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:29,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:29,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935997654] [2021-11-23 01:51:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935997654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:29,406 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:29,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 01:51:29,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376823974] [2021-11-23 01:51:29,407 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:29,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:51:29,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:51:29,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:51:29,409 INFO L87 Difference]: Start difference. First operand 1054 states and 1158 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-11-23 01:51:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:37,763 INFO L93 Difference]: Finished difference Result 1486 states and 1587 transitions. [2021-11-23 01:51:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:51:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 9 [2021-11-23 01:51:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:37,776 INFO L225 Difference]: With dead ends: 1486 [2021-11-23 01:51:37,777 INFO L226 Difference]: Without dead ends: 1486 [2021-11-23 01:51:37,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:51:37,779 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 2041 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:37,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 2539 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 01:51:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-23 01:51:37,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1044. [2021-11-23 01:51:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 573 states have (on average 1.9528795811518325) internal successors, (1119), 1027 states have internal predecessors, (1119), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1145 transitions. [2021-11-23 01:51:37,817 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1145 transitions. Word has length 9 [2021-11-23 01:51:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:37,818 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 1145 transitions. [2021-11-23 01:51:37,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-11-23 01:51:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1145 transitions. [2021-11-23 01:51:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 01:51:37,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:37,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:37,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:38,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:38,034 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2021-11-23 01:51:38,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:38,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243313862] [2021-11-23 01:51:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:38,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:38,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:38,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:38,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 01:51:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:38,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 01:51:38,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:38,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:38,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:38,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243313862] [2021-11-23 01:51:38,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243313862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:38,393 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:38,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 01:51:38,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362192314] [2021-11-23 01:51:38,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:38,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:51:38,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:51:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:51:38,395 INFO L87 Difference]: Start difference. First operand 1044 states and 1145 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:51:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:39,485 INFO L93 Difference]: Finished difference Result 1494 states and 1632 transitions. [2021-11-23 01:51:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:51:39,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 01:51:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:39,497 INFO L225 Difference]: With dead ends: 1494 [2021-11-23 01:51:39,497 INFO L226 Difference]: Without dead ends: 1494 [2021-11-23 01:51:39,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:51:39,501 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 543 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:39,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 3092 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 01:51:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-11-23 01:51:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1283. [2021-11-23 01:51:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 812 states have (on average 1.935960591133005) internal successors, (1572), 1266 states have internal predecessors, (1572), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1598 transitions. [2021-11-23 01:51:39,554 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1598 transitions. Word has length 11 [2021-11-23 01:51:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:39,555 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1598 transitions. [2021-11-23 01:51:39,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:51:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1598 transitions. [2021-11-23 01:51:39,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:51:39,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:39,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:39,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:39,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:39,775 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2117571646, now seen corresponding path program 1 times [2021-11-23 01:51:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:39,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133736779] [2021-11-23 01:51:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:39,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:39,779 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:39,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 01:51:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:40,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:51:40,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:40,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:51:40,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:51:40,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 01:51:40,086 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 01:51:40,091 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 [2021-11-23 01:51:40,181 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 01:51:40,182 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 [2021-11-23 01:51:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:40,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:40,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:40,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133736779] [2021-11-23 01:51:40,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133736779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:40,312 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:40,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 01:51:40,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039686898] [2021-11-23 01:51:40,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:40,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:51:40,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:51:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:51:40,314 INFO L87 Difference]: Start difference. First operand 1283 states and 1598 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:51:43,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:43,176 INFO L93 Difference]: Finished difference Result 1643 states and 2022 transitions. [2021-11-23 01:51:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:51:43,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 01:51:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:43,188 INFO L225 Difference]: With dead ends: 1643 [2021-11-23 01:51:43,189 INFO L226 Difference]: Without dead ends: 1643 [2021-11-23 01:51:43,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 01:51:43,193 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 354 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:43,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 3862 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 01:51:43,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-23 01:51:43,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1282. [2021-11-23 01:51:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 811 states have (on average 1.935881627620222) internal successors, (1570), 1265 states have internal predecessors, (1570), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1596 transitions. [2021-11-23 01:51:43,237 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1596 transitions. Word has length 14 [2021-11-23 01:51:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:43,237 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1596 transitions. [2021-11-23 01:51:43,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:51:43,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1596 transitions. [2021-11-23 01:51:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 01:51:43,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:43,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:43,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:43,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:43,454 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2021-11-23 01:51:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:43,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333572253] [2021-11-23 01:51:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:43,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:43,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:43,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 01:51:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:43,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 01:51:43,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:43,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:43,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:43,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333572253] [2021-11-23 01:51:43,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333572253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:43,692 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:43,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 01:51:43,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444937500] [2021-11-23 01:51:43,692 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:43,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:51:43,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:51:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:51:43,693 INFO L87 Difference]: Start difference. First operand 1282 states and 1596 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-23 01:51:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:43,726 INFO L93 Difference]: Finished difference Result 1222 states and 1510 transitions. [2021-11-23 01:51:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:43,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 19 [2021-11-23 01:51:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:43,744 INFO L225 Difference]: With dead ends: 1222 [2021-11-23 01:51:43,744 INFO L226 Difference]: Without dead ends: 1222 [2021-11-23 01:51:43,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:51:43,746 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 951 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:43,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 1155 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:51:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-23 01:51:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2021-11-23 01:51:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 775 states have (on average 1.9148387096774193) internal successors, (1484), 1205 states have internal predecessors, (1484), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1510 transitions. [2021-11-23 01:51:43,781 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1510 transitions. Word has length 19 [2021-11-23 01:51:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:43,781 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1510 transitions. [2021-11-23 01:51:43,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-23 01:51:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1510 transitions. [2021-11-23 01:51:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 01:51:43,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:43,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:43,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:43,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:43,996 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2021-11-23 01:51:43,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:43,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281416910] [2021-11-23 01:51:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:43,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:43,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:43,998 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:43,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 01:51:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:44,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:51:44,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:44,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:44,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:44,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281416910] [2021-11-23 01:51:44,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281416910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:44,236 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:44,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 01:51:44,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350704675] [2021-11-23 01:51:44,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:44,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:51:44,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:44,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:51:44,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:51:44,237 INFO L87 Difference]: Start difference. First operand 1222 states and 1510 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 01:51:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:44,313 INFO L93 Difference]: Finished difference Result 1194 states and 1454 transitions. [2021-11-23 01:51:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:51:44,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 21 [2021-11-23 01:51:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:44,322 INFO L225 Difference]: With dead ends: 1194 [2021-11-23 01:51:44,322 INFO L226 Difference]: Without dead ends: 1194 [2021-11-23 01:51:44,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:51:44,323 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 922 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:44,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 2079 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:51:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-23 01:51:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1192. [2021-11-23 01:51:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 759 states have (on average 1.878787878787879) internal successors, (1426), 1175 states have internal predecessors, (1426), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1452 transitions. [2021-11-23 01:51:44,358 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1452 transitions. Word has length 21 [2021-11-23 01:51:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:44,358 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1452 transitions. [2021-11-23 01:51:44,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 01:51:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1452 transitions. [2021-11-23 01:51:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 01:51:44,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:44,360 INFO L514 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] [2021-11-23 01:51:44,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:44,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:44,577 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2021-11-23 01:51:44,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:44,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870176565] [2021-11-23 01:51:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:44,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:44,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:44,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 01:51:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:44,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:51:44,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:44,786 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 [2021-11-23 01:51:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:44,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:45,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:45,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870176565] [2021-11-23 01:51:45,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870176565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:45,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:45,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 01:51:45,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968639245] [2021-11-23 01:51:45,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:45,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:51:45,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:45,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:51:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:51:45,049 INFO L87 Difference]: Start difference. First operand 1192 states and 1452 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-23 01:51:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:49,282 INFO L93 Difference]: Finished difference Result 2165 states and 2643 transitions. [2021-11-23 01:51:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:51:49,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-23 01:51:49,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:49,294 INFO L225 Difference]: With dead ends: 2165 [2021-11-23 01:51:49,294 INFO L226 Difference]: Without dead ends: 2165 [2021-11-23 01:51:49,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:51:49,295 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 2017 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:49,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2020 Valid, 1988 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 01:51:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2021-11-23 01:51:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1188. [2021-11-23 01:51:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 759 states have (on average 1.8682476943346509) internal successors, (1418), 1171 states have internal predecessors, (1418), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:51:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1444 transitions. [2021-11-23 01:51:49,342 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1444 transitions. Word has length 35 [2021-11-23 01:51:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:49,343 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1444 transitions. [2021-11-23 01:51:49,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-23 01:51:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1444 transitions. [2021-11-23 01:51:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 01:51:49,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:49,345 INFO L514 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] [2021-11-23 01:51:49,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:49,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:51:49,560 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:51:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:49,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2021-11-23 01:51:49,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:51:49,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504232188] [2021-11-23 01:51:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:49,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:51:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:51:49,562 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:51:49,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 01:51:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:49,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 01:51:49,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:49,747 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 [2021-11-23 01:51:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:50,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:50,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:51:50,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504232188] [2021-11-23 01:51:50,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504232188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:50,748 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:50,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 01:51:50,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84790621] [2021-11-23 01:51:50,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:50,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:51:50,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:51:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:51:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:51:50,750 INFO L87 Difference]: Start difference. First operand 1188 states and 1444 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 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) [2021-11-23 01:52:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:02,904 INFO L93 Difference]: Finished difference Result 1795 states and 2203 transitions. [2021-11-23 01:52:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:52:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 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 35 [2021-11-23 01:52:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:02,916 INFO L225 Difference]: With dead ends: 1795 [2021-11-23 01:52:02,916 INFO L226 Difference]: Without dead ends: 1795 [2021-11-23 01:52:02,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 01:52:02,917 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 1770 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:02,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 3956 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2021-11-23 01:52:02,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-23 01:52:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1184. [2021-11-23 01:52:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 759 states have (on average 1.8577075098814229) internal successors, (1410), 1167 states have internal predecessors, (1410), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:52:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1436 transitions. [2021-11-23 01:52:02,958 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1436 transitions. Word has length 35 [2021-11-23 01:52:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:02,959 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1436 transitions. [2021-11-23 01:52:02,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 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) [2021-11-23 01:52:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1436 transitions. [2021-11-23 01:52:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 01:52:02,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:02,962 INFO L514 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] [2021-11-23 01:52:02,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-23 01:52:03,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:52:03,182 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:52:03,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:03,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2063927218, now seen corresponding path program 1 times [2021-11-23 01:52:03,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:52:03,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944997991] [2021-11-23 01:52:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:03,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:52:03,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:52:03,186 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:52:03,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 01:52:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:03,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:52:03,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:03,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:03,764 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:52:03,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944997991] [2021-11-23 01:52:03,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944997991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:03,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:03,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 01:52:03,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91589559] [2021-11-23 01:52:03,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:03,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:52:03,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:52:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:52:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:03,766 INFO L87 Difference]: Start difference. First operand 1184 states and 1436 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:03,844 INFO L93 Difference]: Finished difference Result 1172 states and 1416 transitions. [2021-11-23 01:52:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:52:03,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-23 01:52:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:03,852 INFO L225 Difference]: With dead ends: 1172 [2021-11-23 01:52:03,852 INFO L226 Difference]: Without dead ends: 1172 [2021-11-23 01:52:03,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:03,854 INFO L933 BasicCegarLoop]: 970 mSDtfsCounter, 898 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:03,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 1990 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:03,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-23 01:52:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-23 01:52:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 747 states have (on average 1.8607764390896921) internal successors, (1390), 1155 states have internal predecessors, (1390), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 01:52:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1416 transitions. [2021-11-23 01:52:03,898 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1416 transitions. Word has length 54 [2021-11-23 01:52:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:03,899 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1416 transitions. [2021-11-23 01:52:03,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1416 transitions. [2021-11-23 01:52:03,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 01:52:03,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:03,902 INFO L514 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] [2021-11-23 01:52:03,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:04,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:52:04,122 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:52:04,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash -203140862, now seen corresponding path program 1 times [2021-11-23 01:52:04,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:52:04,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277891953] [2021-11-23 01:52:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:04,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:52:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:52:04,127 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:52:04,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 01:52:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:04,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 01:52:04,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:04,714 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 01:52:04,715 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 16 treesize of output 21 [2021-11-23 01:52:04,882 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 01:52:04,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-11-23 01:52:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:05,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:06,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:52:06,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277891953] [2021-11-23 01:52:06,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277891953] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:06,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:06,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 01:52:06,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989390558] [2021-11-23 01:52:06,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:06,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:52:06,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:52:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:52:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:52:06,079 INFO L87 Difference]: Start difference. First operand 1172 states and 1416 transitions. Second operand has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:09,062 INFO L93 Difference]: Finished difference Result 1512 states and 1775 transitions. [2021-11-23 01:52:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:52:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 01:52:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:09,070 INFO L225 Difference]: With dead ends: 1512 [2021-11-23 01:52:09,071 INFO L226 Difference]: Without dead ends: 1512 [2021-11-23 01:52:09,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:52:09,072 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 419 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:09,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1991 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 764 Invalid, 0 Unknown, 806 Unchecked, 2.9s Time] [2021-11-23 01:52:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-23 01:52:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1189. [2021-11-23 01:52:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 760 states have (on average 1.85) internal successors, (1406), 1169 states have internal predecessors, (1406), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2021-11-23 01:52:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1438 transitions. [2021-11-23 01:52:09,129 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1438 transitions. Word has length 62 [2021-11-23 01:52:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:09,130 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1438 transitions. [2021-11-23 01:52:09,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1438 transitions. [2021-11-23 01:52:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 01:52:09,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:09,132 INFO L514 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] [2021-11-23 01:52:09,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-23 01:52:09,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:52:09,347 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:52:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash -203140861, now seen corresponding path program 1 times [2021-11-23 01:52:09,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:52:09,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906829541] [2021-11-23 01:52:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:09,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:52:09,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:52:09,351 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:52:09,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 01:52:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:09,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 01:52:09,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:09,839 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 01:52:09,840 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 27 treesize of output 29 [2021-11-23 01:52:09,848 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 01:52:09,849 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 26 treesize of output 22 [2021-11-23 01:52:09,996 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-23 01:52:09,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-23 01:52:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:16,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:18,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:52:18,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906829541] [2021-11-23 01:52:18,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906829541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:18,601 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:18,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-23 01:52:18,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705818235] [2021-11-23 01:52:18,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:18,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 01:52:18,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:52:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 01:52:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 01:52:18,603 INFO L87 Difference]: Start difference. First operand 1189 states and 1438 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:21,335 INFO L93 Difference]: Finished difference Result 1189 states and 1437 transitions. [2021-11-23 01:52:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:52:21,336 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 01:52:21,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:21,343 INFO L225 Difference]: With dead ends: 1189 [2021-11-23 01:52:21,344 INFO L226 Difference]: Without dead ends: 1189 [2021-11-23 01:52:21,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-23 01:52:21,345 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 78 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4614 SdHoareTripleChecker+Invalid, 3077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2443 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:21,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4614 Invalid, 3077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 633 Invalid, 0 Unknown, 2443 Unchecked, 2.6s Time] [2021-11-23 01:52:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-23 01:52:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-11-23 01:52:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 760 states have (on average 1.8486842105263157) internal successors, (1405), 1169 states have internal predecessors, (1405), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2021-11-23 01:52:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1437 transitions. [2021-11-23 01:52:21,378 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1437 transitions. Word has length 62 [2021-11-23 01:52:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:21,379 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1437 transitions. [2021-11-23 01:52:21,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1437 transitions. [2021-11-23 01:52:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 01:52:21,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:21,380 INFO L514 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] [2021-11-23 01:52:21,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:21,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:52:21,600 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:52:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1864793253, now seen corresponding path program 1 times [2021-11-23 01:52:21,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:52:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407015546] [2021-11-23 01:52:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:21,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:52:21,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:52:21,604 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:52:21,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 01:52:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:21,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 01:52:21,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:22,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:22,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:52:22,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407015546] [2021-11-23 01:52:22,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407015546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:22,238 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:22,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-23 01:52:22,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583183170] [2021-11-23 01:52:22,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:22,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:52:22,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:52:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:52:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:52:22,239 INFO L87 Difference]: Start difference. First operand 1189 states and 1437 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:22,400 INFO L93 Difference]: Finished difference Result 1206 states and 1453 transitions. [2021-11-23 01:52:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:52:22,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-23 01:52:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:22,408 INFO L225 Difference]: With dead ends: 1206 [2021-11-23 01:52:22,409 INFO L226 Difference]: Without dead ends: 1206 [2021-11-23 01:52:22,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 01:52:22,410 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 22 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 5796 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:22,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 5796 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-11-23 01:52:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1201. [2021-11-23 01:52:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 769 states have (on average 1.8426527958387515) internal successors, (1417), 1179 states have internal predecessors, (1417), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-23 01:52:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1449 transitions. [2021-11-23 01:52:22,437 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1449 transitions. Word has length 68 [2021-11-23 01:52:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:22,438 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 1449 transitions. [2021-11-23 01:52:22,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1449 transitions. [2021-11-23 01:52:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 01:52:22,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:22,439 INFO L514 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] [2021-11-23 01:52:22,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:22,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:52:22,659 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:52:22,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1913615011, now seen corresponding path program 1 times [2021-11-23 01:52:22,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:52:22,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805863376] [2021-11-23 01:52:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:22,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:52:22,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:52:22,661 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:52:22,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 01:52:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:22,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 01:52:22,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:23,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:23,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:52:23,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805863376] [2021-11-23 01:52:23,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805863376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:23,520 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:23,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 01:52:23,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896494877] [2021-11-23 01:52:23,520 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:23,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 01:52:23,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:52:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 01:52:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:52:23,522 INFO L87 Difference]: Start difference. First operand 1201 states and 1449 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:52:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:23,872 INFO L93 Difference]: Finished difference Result 1242 states and 1493 transitions. [2021-11-23 01:52:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:52:23,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2021-11-23 01:52:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:23,879 INFO L225 Difference]: With dead ends: 1242 [2021-11-23 01:52:23,879 INFO L226 Difference]: Without dead ends: 1239 [2021-11-23 01:52:23,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 01:52:23,880 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 127 mSDsluCounter, 5626 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 6593 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:23,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 6593 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 01:52:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-23 01:52:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1198. [2021-11-23 01:52:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 767 states have (on average 1.8435462842242503) internal successors, (1414), 1176 states have internal predecessors, (1414), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-23 01:52:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1445 transitions. [2021-11-23 01:52:23,909 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1445 transitions. Word has length 68 [2021-11-23 01:52:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:23,910 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1445 transitions. [2021-11-23 01:52:23,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:52:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1445 transitions. [2021-11-23 01:52:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 01:52:23,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:23,912 INFO L514 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, 1, 1] [2021-11-23 01:52:23,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:24,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:52:24,136 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:52:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999061, now seen corresponding path program 1 times [2021-11-23 01:52:24,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:52:24,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638210512] [2021-11-23 01:52:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:24,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:52:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:52:24,139 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:52:24,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 01:52:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:24,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 01:52:24,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:24,589 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 [2021-11-23 01:52:24,813 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 01:52:24,814 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 15 treesize of output 20 [2021-11-23 01:52:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:24,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:25,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:52:25,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638210512] [2021-11-23 01:52:25,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638210512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:25,259 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:25,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2021-11-23 01:52:25,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579050406] [2021-11-23 01:52:25,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:25,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 01:52:25,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:52:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 01:52:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 01:52:25,261 INFO L87 Difference]: Start difference. First operand 1198 states and 1445 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:29,050 INFO L93 Difference]: Finished difference Result 2163 states and 2630 transitions. [2021-11-23 01:52:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:52:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2021-11-23 01:52:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:29,062 INFO L225 Difference]: With dead ends: 2163 [2021-11-23 01:52:29,063 INFO L226 Difference]: Without dead ends: 2163 [2021-11-23 01:52:29,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:52:29,064 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1393 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 922 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:29,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 2286 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1374 Invalid, 0 Unknown, 922 Unchecked, 3.7s Time] [2021-11-23 01:52:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-23 01:52:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1197. [2021-11-23 01:52:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 767 states have (on average 1.8422425032594525) internal successors, (1413), 1175 states have internal predecessors, (1413), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-23 01:52:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1444 transitions. [2021-11-23 01:52:29,098 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1444 transitions. Word has length 73 [2021-11-23 01:52:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:29,098 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1444 transitions. [2021-11-23 01:52:29,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1444 transitions. [2021-11-23 01:52:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 01:52:29,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:29,100 INFO L514 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, 1, 1] [2021-11-23 01:52:29,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:29,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:52:29,316 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:52:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:29,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999062, now seen corresponding path program 1 times [2021-11-23 01:52:29,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:52:29,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914886447] [2021-11-23 01:52:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:29,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:52:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:52:29,319 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:52:29,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 01:52:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:29,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 01:52:29,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:29,826 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 [2021-11-23 01:52:29,834 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 [2021-11-23 01:52:32,629 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 01:52:32,630 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 26 treesize of output 28 [2021-11-23 01:52:32,642 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 01:52:32,643 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 20 treesize of output 20 [2021-11-23 01:52:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:32,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:52:53,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:52:53,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914886447] [2021-11-23 01:52:53,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914886447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:53,768 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:53,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 01:52:53,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574504966] [2021-11-23 01:52:53,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:53,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 01:52:53,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:52:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 01:52:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=98, Unknown=6, NotChecked=0, Total=132 [2021-11-23 01:52:53,770 INFO L87 Difference]: Start difference. First operand 1197 states and 1444 transitions. Second operand has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 01:53:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:05,415 INFO L93 Difference]: Finished difference Result 2206 states and 2735 transitions. [2021-11-23 01:53:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 01:53:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2021-11-23 01:53:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:05,427 INFO L225 Difference]: With dead ends: 2206 [2021-11-23 01:53:05,427 INFO L226 Difference]: Without dead ends: 2206 [2021-11-23 01:53:05,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=36, Invalid=114, Unknown=6, NotChecked=0, Total=156 [2021-11-23 01:53:05,429 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 2398 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 7446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3450 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:05,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2409 Valid, 4111 Invalid, 7446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3936 Invalid, 0 Unknown, 3450 Unchecked, 11.4s Time] [2021-11-23 01:53:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-23 01:53:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1165. [2021-11-23 01:53:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 769 states have (on average 1.7958387516254877) internal successors, (1381), 1143 states have internal predecessors, (1381), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-23 01:53:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1412 transitions. [2021-11-23 01:53:05,464 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1412 transitions. Word has length 73 [2021-11-23 01:53:05,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:05,465 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1412 transitions. [2021-11-23 01:53:05,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 01:53:05,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1412 transitions. [2021-11-23 01:53:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 01:53:05,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:05,467 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:05,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:05,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:53:05,687 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:53:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:05,688 INFO L85 PathProgramCache]: Analyzing trace with hash 816968073, now seen corresponding path program 1 times [2021-11-23 01:53:05,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:53:05,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913514872] [2021-11-23 01:53:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:05,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:53:05,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:53:05,689 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:53:05,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 01:53:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 01:53:06,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:06,163 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 [2021-11-23 01:53:06,202 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 [2021-11-23 01:53:06,253 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 25 treesize of output 13 [2021-11-23 01:53:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:06,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:06,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:53:06,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913514872] [2021-11-23 01:53:06,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913514872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:06,524 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:06,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-23 01:53:06,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017563588] [2021-11-23 01:53:06,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:06,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:53:06,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:53:06,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:53:06,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:53:06,526 INFO L87 Difference]: Start difference. First operand 1165 states and 1412 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:53:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:12,044 INFO L93 Difference]: Finished difference Result 1173 states and 1420 transitions. [2021-11-23 01:53:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 01:53:12,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2021-11-23 01:53:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:12,051 INFO L225 Difference]: With dead ends: 1173 [2021-11-23 01:53:12,051 INFO L226 Difference]: Without dead ends: 1173 [2021-11-23 01:53:12,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 01:53:12,053 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 23 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:12,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 3870 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 01:53:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-23 01:53:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1172. [2021-11-23 01:53:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 775 states have (on average 1.792258064516129) internal successors, (1389), 1149 states have internal predecessors, (1389), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-23 01:53:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1420 transitions. [2021-11-23 01:53:12,110 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1420 transitions. Word has length 80 [2021-11-23 01:53:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:12,110 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1420 transitions. [2021-11-23 01:53:12,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:53:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1420 transitions. [2021-11-23 01:53:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 01:53:12,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:12,112 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:12,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:12,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:53:12,326 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:53:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -443793445, now seen corresponding path program 1 times [2021-11-23 01:53:12,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:53:12,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910807719] [2021-11-23 01:53:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:12,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:53:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:53:12,329 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:53:12,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 01:53:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:12,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 01:53:12,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:12,764 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 [2021-11-23 01:53:12,833 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 [2021-11-23 01:53:12,845 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 [2021-11-23 01:53:12,916 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 [2021-11-23 01:53:12,922 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 [2021-11-23 01:53:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:13,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:14,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:53:14,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910807719] [2021-11-23 01:53:14,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910807719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:14,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:14,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-23 01:53:14,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999040599] [2021-11-23 01:53:14,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:14,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 01:53:14,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:53:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 01:53:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 01:53:14,025 INFO L87 Difference]: Start difference. First operand 1172 states and 1420 transitions. Second operand has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:53:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:32,635 INFO L93 Difference]: Finished difference Result 1174 states and 1419 transitions. [2021-11-23 01:53:32,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 01:53:32,636 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81 [2021-11-23 01:53:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:32,642 INFO L225 Difference]: With dead ends: 1174 [2021-11-23 01:53:32,642 INFO L226 Difference]: Without dead ends: 1174 [2021-11-23 01:53:32,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-23 01:53:32,647 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 53 mSDsluCounter, 4878 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:32,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 5803 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2021-11-23 01:53:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-11-23 01:53:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1172. [2021-11-23 01:53:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 775 states have (on average 1.790967741935484) internal successors, (1388), 1149 states have internal predecessors, (1388), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-23 01:53:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1419 transitions. [2021-11-23 01:53:32,675 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1419 transitions. Word has length 81 [2021-11-23 01:53:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:32,675 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1419 transitions. [2021-11-23 01:53:32,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:53:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1419 transitions. [2021-11-23 01:53:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 01:53:32,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:32,677 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:32,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:32,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:53:32,895 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:53:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash 540063607, now seen corresponding path program 1 times [2021-11-23 01:53:32,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:53:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930866300] [2021-11-23 01:53:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:32,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:53:32,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:53:32,897 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:53:32,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 01:53:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:33,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 01:53:33,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:33,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:33,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:53:33,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930866300] [2021-11-23 01:53:33,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930866300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:33,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:33,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 01:53:33,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828767274] [2021-11-23 01:53:33,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:33,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:53:33,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:53:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:53:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:53:33,582 INFO L87 Difference]: Start difference. First operand 1172 states and 1419 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 01:53:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:33,790 INFO L93 Difference]: Finished difference Result 1184 states and 1432 transitions. [2021-11-23 01:53:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 01:53:33,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2021-11-23 01:53:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:33,797 INFO L225 Difference]: With dead ends: 1184 [2021-11-23 01:53:33,797 INFO L226 Difference]: Without dead ends: 1178 [2021-11-23 01:53:33,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-11-23 01:53:33,799 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 32 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:33,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 2790 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:53:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-11-23 01:53:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2021-11-23 01:53:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 780 states have (on average 1.7871794871794873) internal successors, (1394), 1155 states have internal predecessors, (1394), 15 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-23 01:53:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1426 transitions. [2021-11-23 01:53:33,829 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1426 transitions. Word has length 88 [2021-11-23 01:53:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:33,829 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1426 transitions. [2021-11-23 01:53:33,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 01:53:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1426 transitions. [2021-11-23 01:53:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 01:53:33,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:33,831 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:33,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:34,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:53:34,046 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:53:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1673703735, now seen corresponding path program 1 times [2021-11-23 01:53:34,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:53:34,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801234369] [2021-11-23 01:53:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:34,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:53:34,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:53:34,049 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:53:34,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 01:53:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:34,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:53:34,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:34,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:34,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:53:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801234369] [2021-11-23 01:53:34,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801234369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [282520260] [2021-11-23 01:53:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:34,960 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 01:53:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 01:53:34,967 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 01:53:34,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-23 01:53:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:35,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:53:35,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:35,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:35,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [282520260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:35,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148554012] [2021-11-23 01:53:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:35,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:53:35,764 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:53:35,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 01:53:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:35,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 01:53:35,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:36,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:36,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148554012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:36,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 01:53:36,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 17 [2021-11-23 01:53:36,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846148143] [2021-11-23 01:53:36,502 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 01:53:36,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 01:53:36,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:53:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 01:53:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-23 01:53:36,503 INFO L87 Difference]: Start difference. First operand 1178 states and 1426 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 01:53:37,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:37,109 INFO L93 Difference]: Finished difference Result 1196 states and 1447 transitions. [2021-11-23 01:53:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 01:53:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2021-11-23 01:53:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:37,114 INFO L225 Difference]: With dead ends: 1196 [2021-11-23 01:53:37,114 INFO L226 Difference]: Without dead ends: 1187 [2021-11-23 01:53:37,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-23 01:53:37,116 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 55 mSDsluCounter, 7426 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:37,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 8361 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 01:53:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-23 01:53:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1184. [2021-11-23 01:53:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 786 states have (on average 1.782442748091603) internal successors, (1401), 1161 states have internal predecessors, (1401), 15 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-23 01:53:37,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1433 transitions. [2021-11-23 01:53:37,139 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1433 transitions. Word has length 90 [2021-11-23 01:53:37,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:37,139 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1433 transitions. [2021-11-23 01:53:37,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 01:53:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1433 transitions. [2021-11-23 01:53:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 01:53:37,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:37,141 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:53:37,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-23 01:53:37,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:37,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-23 01:53:37,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 01:53:37,756 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-23 01:53:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:37,757 INFO L85 PathProgramCache]: Analyzing trace with hash -583248713, now seen corresponding path program 2 times [2021-11-23 01:53:37,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:53:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738049440] [2021-11-23 01:53:37,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 01:53:37,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:53:37,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:53:37,758 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:53:37,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 01:53:38,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 01:53:38,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:53:38,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:53:38,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:38,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:39,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:53:39,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738049440] [2021-11-23 01:53:39,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738049440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:39,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374082562] [2021-11-23 01:53:39,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 01:53:39,399 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 01:53:39,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 01:53:39,400 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 01:53:39,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-23 01:53:40,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 01:53:40,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:53:40,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 01:53:40,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:53:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:40,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:53:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:53:41,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [374082562] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:53:41,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076780531] [2021-11-23 01:53:41,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 01:53:41,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:53:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:53:41,166 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:53:41,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3109db4e-d1a2-4a51-aa53-f840746fd6c7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 01:55:02,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 01:55:02,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 01:55:02,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 01:55:02,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:55:03,029 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 01:55:03,030 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 16 treesize of output 16 [2021-11-23 01:55:03,086 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 18 treesize of output 14 [2021-11-23 01:56:40,133 WARN L227 SmtUtils]: Spent 22.56s on a formula simplification. DAG size of input: 114 DAG size of output: 36 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 01:56:40,134 INFO L354 Elim1Store]: treesize reduction 880, result has 6.3 percent of original size [2021-11-23 01:56:40,135 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 2 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 86 [2021-11-23 01:56:40,734 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-23 01:56:40,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 37 [2021-11-23 01:56:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:56:40,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:56:43,640 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 01:56:43,640 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 65 treesize of output 64 [2021-11-23 02:01:08,617 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 02:01:08,618 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 115 treesize of output 114 [2021-11-23 02:01:12,130 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) is different from false [2021-11-23 02:01:15,033 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) is different from false [2021-11-23 02:01:50,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 02:01:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:01:50,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076780531] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:01:50,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:01:50,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 18, 18] total 53 [2021-11-23 02:01:50,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417576789] [2021-11-23 02:01:50,244 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:01:50,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 02:01:50,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:01:50,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 02:01:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2195, Unknown=162, NotChecked=198, Total=2756 [2021-11-23 02:01:50,248 INFO L87 Difference]: Start difference. First operand 1184 states and 1433 transitions. Second operand has 53 states, 51 states have (on average 4.96078431372549) internal successors, (253), 49 states have internal predecessors, (253), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-23 02:01:56,785 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-23 02:01:58,826 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-23 02:03:30,320 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ bv1 32)) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|)))))) is different from false [2021-11-23 02:03:32,356 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv2 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))))))))) is different from false [2021-11-23 02:03:34,394 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))) (_ bv1 1))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= (_ bv3 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-23 02:03:36,426 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv4 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1|) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))))))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-23 02:03:38,451 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))) (_ bv1 1))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ bv5 32)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_88| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_88|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false