./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs --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 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:36:26,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:36:26,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:36:26,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:36:26,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:36:26,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:36:26,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:36:26,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:36:26,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:36:26,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:36:26,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:36:26,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:36:26,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:36:26,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:36:26,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:36:26,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:36:26,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:36:26,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:36:26,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:36:26,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:36:26,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:36:26,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:36:26,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:36:26,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:36:26,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:36:26,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:36:26,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:36:26,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:36:26,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:36:26,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:36:26,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:36:26,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:36:26,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:36:26,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:36:26,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:36:26,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:36:26,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:36:26,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:36:26,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:36:26,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:36:26,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:36:26,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 13:36:26,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:36:26,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:36:26,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:36:26,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:36:26,906 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:36:26,906 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:36:26,907 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:36:26,907 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:36:26,908 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:36:26,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:36:26,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:36:26,909 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:36:26,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:36:26,910 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:36:26,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:36:26,911 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:36:26,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:36:26,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:36:26,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:36:26,913 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:36:26,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:36:26,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:36:26,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:36:26,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:36:26,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:36:26,915 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:36:26,915 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:36:26,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:36:26,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:36:26,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:36:26,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:36:26,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:36:26,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:36:26,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:36:26,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:36:26,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:36:26,918 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:36:26,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:36:26,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:36:26,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:36:26,919 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 [2021-11-19 13:36:27,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:36:27,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:36:27,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:36:27,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:36:27,296 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:36:27,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-19 13:36:27,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/249ef0599/c595d5a366624665af3b675ddf8f4075/FLAG5ebb7606c [2021-11-19 13:36:28,219 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:36:28,225 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-19 13:36:28,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/249ef0599/c595d5a366624665af3b675ddf8f4075/FLAG5ebb7606c [2021-11-19 13:36:28,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/249ef0599/c595d5a366624665af3b675ddf8f4075 [2021-11-19 13:36:28,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:36:28,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:36:28,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:36:28,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:36:28,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:36:28,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:36:28" (1/1) ... [2021-11-19 13:36:28,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54daa00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:28, skipping insertion in model container [2021-11-19 13:36:28,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:36:28" (1/1) ... [2021-11-19 13:36:28,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:36:28,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:36:29,159 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-19 13:36:29,383 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-19 13:36:29,420 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:36:29,445 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) [2021-11-19 13:36:29,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2794328d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:29, skipping insertion in model container [2021-11-19 13:36:29,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:36:29,447 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:36:29,449 INFO L158 Benchmark]: Toolchain (without parser) took 1084.04ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 67.6MB in the end (delta: -8.3MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-11-19 13:36:29,450 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:36:29,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1077.32ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 67.6MB in the end (delta: -8.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-11-19 13:36:29,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1077.32ms. Allocated memory is still 104.9MB. Free memory was 59.1MB in the beginning and 67.6MB in the end (delta: -8.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs --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 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:36:32,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:36:32,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:36:32,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:36:32,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:36:32,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:36:32,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:36:32,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:36:32,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:36:32,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:36:32,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:36:32,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:36:32,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:36:32,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:36:32,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:36:32,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:36:32,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:36:32,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:36:32,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:36:32,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:36:32,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:36:32,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:36:32,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:36:32,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:36:32,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:36:32,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:36:32,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:36:32,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:36:32,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:36:32,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:36:32,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:36:32,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:36:32,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:36:32,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:36:32,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:36:32,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:36:32,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:36:32,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:36:32,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:36:32,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:36:32,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:36:32,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 13:36:32,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:36:32,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:36:32,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:36:32,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:36:32,459 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:36:32,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:36:32,460 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:36:32,460 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:36:32,460 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:36:32,461 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:36:32,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:36:32,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:36:32,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:36:32,465 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:36:32,465 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:36:32,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:36:32,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:36:32,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:36:32,466 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:36:32,466 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:36:32,466 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:36:32,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:36:32,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:36:32,467 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:36:32,468 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:36:32,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:36:32,468 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:36:32,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:36:32,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:36:32,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:36:32,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:36:32,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:36:32,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:36:32,471 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:36:32,471 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:32,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:36:32,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:36:32,472 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 [2021-11-19 13:36:32,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:36:32,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:36:32,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:36:32,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:36:32,986 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:36:32,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-19 13:36:33,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/5e2891d8c/3a04fea1bccc4e0b8a3def35e3869659/FLAG89da85024 [2021-11-19 13:36:33,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:36:33,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-19 13:36:33,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/5e2891d8c/3a04fea1bccc4e0b8a3def35e3869659/FLAG89da85024 [2021-11-19 13:36:33,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/data/5e2891d8c/3a04fea1bccc4e0b8a3def35e3869659 [2021-11-19 13:36:33,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:36:34,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:36:34,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:36:34,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:36:34,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:36:34,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:36:33" (1/1) ... [2021-11-19 13:36:34,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31579d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:34, skipping insertion in model container [2021-11-19 13:36:34,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:36:33" (1/1) ... [2021-11-19 13:36:34,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:36:34,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:36:34,899 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-19 13:36:35,131 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-19 13:36:35,166 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:36:35,193 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:36:35,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:36:35,248 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-19 13:36:35,310 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-19 13:36:35,335 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:36:35,347 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:36:35,403 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[37019,37032] [2021-11-19 13:36:35,478 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_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i[47352,47365] [2021-11-19 13:36:35,488 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:36:35,579 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:36:35,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35 WrapperNode [2021-11-19 13:36:35,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:36:35,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:36:35,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:36:35,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:36:35,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,766 INFO L137 Inliner]: procedures = 211, calls = 286, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1054 [2021-11-19 13:36:35,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:36:35,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:36:35,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:36:35,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:36:35,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:36:35,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:36:35,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:36:35,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:36:35,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (1/1) ... [2021-11-19 13:36:35,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:36:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:36:35,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:36:35,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:36:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:36:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:36:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:36:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:36:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:36:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:36:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:36:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:36:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:36:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:36:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:36:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:36:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:36:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:36:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:36:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:36:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:36:36,334 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:36:36,336 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:36:36,341 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:36:42,508 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:36:42,526 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:36:42,526 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-19 13:36:42,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:36:42 BoogieIcfgContainer [2021-11-19 13:36:42,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:36:42,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:36:42,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:36:42,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:36:42,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:36:33" (1/3) ... [2021-11-19 13:36:42,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453bf894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:36:42, skipping insertion in model container [2021-11-19 13:36:42,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:36:35" (2/3) ... [2021-11-19 13:36:42,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453bf894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:36:42, skipping insertion in model container [2021-11-19 13:36:42,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:36:42" (3/3) ... [2021-11-19 13:36:42,542 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-2.i [2021-11-19 13:36:42,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:36:42,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-19 13:36:42,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:36:42,618 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 [2021-11-19 13:36:42,618 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-19 13:36:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 1081 states, 537 states have (on average 2.2364990689013036) internal successors, (1201), 1075 states have internal predecessors, (1201), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:36:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:36:42,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:42,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:36:42,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:36:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 13:36:42,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:42,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936422156] [2021-11-19 13:36:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:42,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:42,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:42,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:42,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:36:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:42,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:36:42,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:43,123 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 [2021-11-19 13:36:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:43,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:43,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:43,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936422156] [2021-11-19 13:36:43,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936422156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:43,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:36:43,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:36:43,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938886398] [2021-11-19 13:36:43,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:43,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:36:43,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:36:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:36:43,261 INFO L87 Difference]: Start difference. First operand has 1081 states, 537 states have (on average 2.2364990689013036) internal successors, (1201), 1075 states have internal predecessors, (1201), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-19 13:36:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:46,158 INFO L93 Difference]: Finished difference Result 1245 states and 1321 transitions. [2021-11-19 13:36:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:36:46,162 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 [2021-11-19 13:36:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:46,190 INFO L225 Difference]: With dead ends: 1245 [2021-11-19 13:36:46,191 INFO L226 Difference]: Without dead ends: 1243 [2021-11-19 13:36:46,193 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 [2021-11-19 13:36:46,197 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 995 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:46,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 805 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 13:36:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2021-11-19 13:36:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1065. [2021-11-19 13:36:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 537 states have (on average 2.080074487895717) internal successors, (1117), 1059 states have internal predecessors, (1117), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:36:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1133 transitions. [2021-11-19 13:36:46,327 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1133 transitions. Word has length 3 [2021-11-19 13:36:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:46,328 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1133 transitions. [2021-11-19 13:36:46,328 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) [2021-11-19 13:36:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1133 transitions. [2021-11-19 13:36:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:36:46,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:46,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:36:46,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:46,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:46,543 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:36:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 13:36:46,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:46,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784858928] [2021-11-19 13:36:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:46,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:46,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:46,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:36:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:46,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:36:46,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:46,786 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 [2021-11-19 13:36:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:46,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:46,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:46,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784858928] [2021-11-19 13:36:46,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784858928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:46,880 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:36:46,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:36:46,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154938938] [2021-11-19 13:36:46,881 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:46,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:36:46,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:36:46,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:36:46,884 INFO L87 Difference]: Start difference. First operand 1065 states and 1133 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) [2021-11-19 13:36:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:52,860 INFO L93 Difference]: Finished difference Result 1558 states and 1671 transitions. [2021-11-19 13:36:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:36:52,860 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 [2021-11-19 13:36:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:52,871 INFO L225 Difference]: With dead ends: 1558 [2021-11-19 13:36:52,871 INFO L226 Difference]: Without dead ends: 1558 [2021-11-19 13:36:52,872 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 [2021-11-19 13:36:52,873 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 1187 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:52,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 1610 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 13:36:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-11-19 13:36:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1100. [2021-11-19 13:36:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 581 states have (on average 2.0585197934595527) internal successors, (1196), 1094 states have internal predecessors, (1196), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:36:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1212 transitions. [2021-11-19 13:36:52,926 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1212 transitions. Word has length 3 [2021-11-19 13:36:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:52,926 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1212 transitions. [2021-11-19 13:36:52,927 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) [2021-11-19 13:36:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1212 transitions. [2021-11-19 13:36:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:36:52,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:52,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:52,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:53,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:53,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:36:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 13:36:53,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:53,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756727807] [2021-11-19 13:36:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:53,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:53,143 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:53,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:36:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:53,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:36:53,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:53,323 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 [2021-11-19 13:36:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:53,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:53,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:53,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756727807] [2021-11-19 13:36:53,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756727807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:53,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:36:53,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:36:53,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078735922] [2021-11-19 13:36:53,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:53,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:36:53,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:53,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:36:53,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:36:53,388 INFO L87 Difference]: Start difference. First operand 1100 states and 1212 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:36:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:55,739 INFO L93 Difference]: Finished difference Result 1277 states and 1416 transitions. [2021-11-19 13:36:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:36:55,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 13:36:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:55,751 INFO L225 Difference]: With dead ends: 1277 [2021-11-19 13:36:55,752 INFO L226 Difference]: Without dead ends: 1277 [2021-11-19 13:36:55,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:36:55,754 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 816 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:55,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 1186 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:36:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-19 13:36:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1053. [2021-11-19 13:36:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 581 states have (on average 1.972461273666093) internal successors, (1146), 1047 states have internal predecessors, (1146), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:36:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1162 transitions. [2021-11-19 13:36:55,796 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1162 transitions. Word has length 8 [2021-11-19 13:36:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:55,797 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1162 transitions. [2021-11-19 13:36:55,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:36:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1162 transitions. [2021-11-19 13:36:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:36:55,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:55,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:55,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:36:56,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:56,013 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:36:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 13:36:56,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:56,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303861800] [2021-11-19 13:36:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:56,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:56,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:56,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:56,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:36:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:56,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:36:56,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:56,199 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 [2021-11-19 13:36:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:56,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:56,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:56,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303861800] [2021-11-19 13:36:56,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303861800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:56,364 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:36:56,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:36:56,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140002308] [2021-11-19 13:36:56,365 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:56,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:36:56,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:36:56,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:36:56,366 INFO L87 Difference]: Start difference. First operand 1053 states and 1162 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:01,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:01,021 INFO L93 Difference]: Finished difference Result 1307 states and 1410 transitions. [2021-11-19 13:37:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:37:01,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 13:37:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:01,032 INFO L225 Difference]: With dead ends: 1307 [2021-11-19 13:37:01,032 INFO L226 Difference]: Without dead ends: 1307 [2021-11-19 13:37:01,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:37:01,034 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 1042 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:01,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 1510 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-19 13:37:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2021-11-19 13:37:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1043. [2021-11-19 13:37:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 581 states have (on average 1.9500860585197934) internal successors, (1133), 1037 states have internal predecessors, (1133), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:37:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1149 transitions. [2021-11-19 13:37:01,074 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1149 transitions. Word has length 8 [2021-11-19 13:37:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:01,075 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1149 transitions. [2021-11-19 13:37:01,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1149 transitions. [2021-11-19 13:37:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:37:01,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:01,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:01,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:01,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:01,288 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 871160987, now seen corresponding path program 1 times [2021-11-19 13:37:01,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:01,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843519503] [2021-11-19 13:37:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:01,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:01,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:01,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:01,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:37:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:01,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:01,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:01,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:01,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:01,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843519503] [2021-11-19 13:37:01,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843519503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:01,615 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:01,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:37:01,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276804388] [2021-11-19 13:37:01,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:01,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:37:01,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:01,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:37:01,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:37:01,618 INFO L87 Difference]: Start difference. First operand 1043 states and 1149 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:02,004 INFO L93 Difference]: Finished difference Result 1516 states and 1666 transitions. [2021-11-19 13:37:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:37:02,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 13:37:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:02,016 INFO L225 Difference]: With dead ends: 1516 [2021-11-19 13:37:02,016 INFO L226 Difference]: Without dead ends: 1516 [2021-11-19 13:37:02,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:37:02,018 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 570 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:02,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2042 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:37:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-11-19 13:37:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1223. [2021-11-19 13:37:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 756 states have (on average 1.8981481481481481) internal successors, (1435), 1217 states have internal predecessors, (1435), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1461 transitions. [2021-11-19 13:37:02,063 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1461 transitions. Word has length 11 [2021-11-19 13:37:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:02,063 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1461 transitions. [2021-11-19 13:37:02,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1461 transitions. [2021-11-19 13:37:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:37:02,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:02,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:02,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:02,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:02,280 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:02,281 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-19 13:37:02,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:02,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936411601] [2021-11-19 13:37:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:02,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:02,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:02,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:37:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:02,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:37:02,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:02,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:02,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:02,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936411601] [2021-11-19 13:37:02,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936411601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:02,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:02,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:37:02,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229601458] [2021-11-19 13:37:02,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:02,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:37:02,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:37:02,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:37:02,532 INFO L87 Difference]: Start difference. First operand 1223 states and 1461 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:02,591 INFO L93 Difference]: Finished difference Result 1377 states and 1601 transitions. [2021-11-19 13:37:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:37:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 13:37:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:02,602 INFO L225 Difference]: With dead ends: 1377 [2021-11-19 13:37:02,602 INFO L226 Difference]: Without dead ends: 1377 [2021-11-19 13:37:02,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:37:02,606 INFO L933 BasicCegarLoop]: 1224 mSDtfsCounter, 808 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:02,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 2048 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:37:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-11-19 13:37:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1163. [2021-11-19 13:37:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 720 states have (on average 1.8736111111111111) internal successors, (1349), 1157 states have internal predecessors, (1349), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1375 transitions. [2021-11-19 13:37:02,663 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1375 transitions. Word has length 13 [2021-11-19 13:37:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:02,664 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1375 transitions. [2021-11-19 13:37:02,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1375 transitions. [2021-11-19 13:37:02,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:37:02,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:02,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:02,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:02,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:02,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:02,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1723272146, now seen corresponding path program 1 times [2021-11-19 13:37:02,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:02,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863634321] [2021-11-19 13:37:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:02,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:02,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:02,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:37:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:03,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:03,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:03,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:37:03,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:37:03,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:37:03,202 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 13:37:03,202 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 13:37:03,278 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 13:37:03,279 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 [2021-11-19 13:37:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:03,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:03,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:03,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863634321] [2021-11-19 13:37:03,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863634321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:03,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:03,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:37:03,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190037756] [2021-11-19 13:37:03,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:03,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:37:03,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:03,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:37:03,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:37:03,401 INFO L87 Difference]: Start difference. First operand 1163 states and 1375 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:05,891 INFO L93 Difference]: Finished difference Result 1500 states and 1763 transitions. [2021-11-19 13:37:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:37:05,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-19 13:37:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:05,903 INFO L225 Difference]: With dead ends: 1500 [2021-11-19 13:37:05,903 INFO L226 Difference]: Without dead ends: 1500 [2021-11-19 13:37:05,904 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 [2021-11-19 13:37:05,905 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 342 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 4692 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:05,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 4692 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 13:37:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-19 13:37:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1162. [2021-11-19 13:37:05,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 719 states have (on average 1.8734353268428372) internal successors, (1347), 1156 states have internal predecessors, (1347), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1373 transitions. [2021-11-19 13:37:05,947 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1373 transitions. Word has length 14 [2021-11-19 13:37:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:05,947 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1373 transitions. [2021-11-19 13:37:05,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1373 transitions. [2021-11-19 13:37:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:37:05,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:05,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:05,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:06,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:06,174 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 13:37:06,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:06,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869406172] [2021-11-19 13:37:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:06,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:06,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:06,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:37:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:06,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:37:06,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:06,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:06,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:06,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869406172] [2021-11-19 13:37:06,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869406172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:06,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:06,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:37:06,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54693633] [2021-11-19 13:37:06,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:06,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:37:06,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:06,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:37:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:37:06,487 INFO L87 Difference]: Start difference. First operand 1162 states and 1373 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:06,549 INFO L93 Difference]: Finished difference Result 1102 states and 1287 transitions. [2021-11-19 13:37:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:37:06,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-19 13:37:06,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:06,557 INFO L225 Difference]: With dead ends: 1102 [2021-11-19 13:37:06,557 INFO L226 Difference]: Without dead ends: 1102 [2021-11-19 13:37:06,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:37:06,559 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 1890 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:06,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 1008 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:37:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-19 13:37:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2021-11-19 13:37:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 683 states have (on average 1.8462664714494876) internal successors, (1261), 1096 states have internal predecessors, (1261), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1287 transitions. [2021-11-19 13:37:06,592 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1287 transitions. Word has length 18 [2021-11-19 13:37:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:06,593 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1287 transitions. [2021-11-19 13:37:06,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1287 transitions. [2021-11-19 13:37:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:37:06,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:06,595 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] [2021-11-19 13:37:06,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:06,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:06,810 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 13:37:06,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:06,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596859856] [2021-11-19 13:37:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:06,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:06,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:06,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:37:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:07,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:07,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:07,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:07,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:07,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596859856] [2021-11-19 13:37:07,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596859856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:07,146 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:07,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:37:07,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238210298] [2021-11-19 13:37:07,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:07,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:37:07,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:37:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:37:07,149 INFO L87 Difference]: Start difference. First operand 1102 states and 1287 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:07,260 INFO L93 Difference]: Finished difference Result 1074 states and 1231 transitions. [2021-11-19 13:37:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:37:07,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-19 13:37:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:07,268 INFO L225 Difference]: With dead ends: 1074 [2021-11-19 13:37:07,269 INFO L226 Difference]: Without dead ends: 1074 [2021-11-19 13:37:07,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:37:07,273 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 916 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1919 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 [2021-11-19 13:37:07,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 1919 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:37:07,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-19 13:37:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1072. [2021-11-19 13:37:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 667 states have (on average 1.8035982008995501) internal successors, (1203), 1066 states have internal predecessors, (1203), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1229 transitions. [2021-11-19 13:37:07,330 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1229 transitions. Word has length 20 [2021-11-19 13:37:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:07,330 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1229 transitions. [2021-11-19 13:37:07,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1229 transitions. [2021-11-19 13:37:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:37:07,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:07,333 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] [2021-11-19 13:37:07,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:07,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:07,549 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:07,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 13:37:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:07,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105982731] [2021-11-19 13:37:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:07,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:07,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:07,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:07,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:37:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:07,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:07,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:07,744 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 [2021-11-19 13:37:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:07,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:08,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:08,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105982731] [2021-11-19 13:37:08,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105982731] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:08,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:08,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:37:08,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895904065] [2021-11-19 13:37:08,089 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:08,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:37:08,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:37:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:37:08,090 INFO L87 Difference]: Start difference. First operand 1072 states and 1229 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:10,611 INFO L93 Difference]: Finished difference Result 1525 states and 1766 transitions. [2021-11-19 13:37:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:37:10,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-19 13:37:10,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:10,622 INFO L225 Difference]: With dead ends: 1525 [2021-11-19 13:37:10,622 INFO L226 Difference]: Without dead ends: 1525 [2021-11-19 13:37:10,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:37:10,624 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 1467 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:10,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 1062 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 13:37:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-11-19 13:37:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1068. [2021-11-19 13:37:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 667 states have (on average 1.7916041979010495) internal successors, (1195), 1062 states have internal predecessors, (1195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1221 transitions. [2021-11-19 13:37:10,659 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1221 transitions. Word has length 34 [2021-11-19 13:37:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:10,660 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1221 transitions. [2021-11-19 13:37:10,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1221 transitions. [2021-11-19 13:37:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:37:10,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:10,662 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] [2021-11-19 13:37:10,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:10,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:10,876 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 13:37:10,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:10,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118187517] [2021-11-19 13:37:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:10,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:10,879 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:10,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:37:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:11,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:37:11,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:11,086 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 [2021-11-19 13:37:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:11,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:12,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:12,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118187517] [2021-11-19 13:37:12,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118187517] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:12,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:12,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:37:12,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163575543] [2021-11-19 13:37:12,005 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:12,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:37:12,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:37:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:37:12,007 INFO L87 Difference]: Start difference. First operand 1068 states and 1221 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:20,166 INFO L93 Difference]: Finished difference Result 1579 states and 1783 transitions. [2021-11-19 13:37:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:37:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-19 13:37:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:20,181 INFO L225 Difference]: With dead ends: 1579 [2021-11-19 13:37:20,182 INFO L226 Difference]: Without dead ends: 1579 [2021-11-19 13:37:20,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:37:20,183 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 1944 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:20,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 2136 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-19 13:37:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-19 13:37:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1064. [2021-11-19 13:37:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 667 states have (on average 1.7796101949025487) internal successors, (1187), 1058 states have internal predecessors, (1187), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1213 transitions. [2021-11-19 13:37:20,219 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1213 transitions. Word has length 34 [2021-11-19 13:37:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:20,220 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1213 transitions. [2021-11-19 13:37:20,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1213 transitions. [2021-11-19 13:37:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 13:37:20,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:20,229 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] [2021-11-19 13:37:20,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:20,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:20,445 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-19 13:37:20,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:20,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461250826] [2021-11-19 13:37:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:20,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:20,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:20,448 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:20,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:37:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:20,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:20,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:20,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:21,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:21,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461250826] [2021-11-19 13:37:21,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461250826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:21,041 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:21,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:37:21,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040890837] [2021-11-19 13:37:21,041 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:21,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:37:21,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:21,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:37:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:37:21,043 INFO L87 Difference]: Start difference. First operand 1064 states and 1213 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:21,121 INFO L93 Difference]: Finished difference Result 1052 states and 1193 transitions. [2021-11-19 13:37:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:37:21,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-19 13:37:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:21,129 INFO L225 Difference]: With dead ends: 1052 [2021-11-19 13:37:21,130 INFO L226 Difference]: Without dead ends: 1052 [2021-11-19 13:37:21,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:37:21,131 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 892 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1865 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 [2021-11-19 13:37:21,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1865 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:37:21,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-11-19 13:37:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2021-11-19 13:37:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 655 states have (on average 1.7816793893129772) internal successors, (1167), 1046 states have internal predecessors, (1167), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1193 transitions. [2021-11-19 13:37:21,160 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1193 transitions. Word has length 52 [2021-11-19 13:37:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:21,161 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 1193 transitions. [2021-11-19 13:37:21,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1193 transitions. [2021-11-19 13:37:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 13:37:21,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:21,163 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] [2021-11-19 13:37:21,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:21,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:21,379 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 13:37:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:21,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972874463] [2021-11-19 13:37:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:21,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:21,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:21,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:37:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:21,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:37:21,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:21,800 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 [2021-11-19 13:37:21,810 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 [2021-11-19 13:37:22,655 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 13:37:22,655 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 25 treesize of output 27 [2021-11-19 13:37:22,676 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:37:22,676 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 24 treesize of output 20 [2021-11-19 13:37:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:22,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:28,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:28,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972874463] [2021-11-19 13:37:28,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972874463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:28,413 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:28,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:37:28,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031990316] [2021-11-19 13:37:28,414 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:28,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:37:28,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:37:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 13:37:28,416 INFO L87 Difference]: Start difference. First operand 1052 states and 1193 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:34,061 INFO L93 Difference]: Finished difference Result 1473 states and 1666 transitions. [2021-11-19 13:37:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:37:34,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-19 13:37:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:34,072 INFO L225 Difference]: With dead ends: 1473 [2021-11-19 13:37:34,072 INFO L226 Difference]: Without dead ends: 1473 [2021-11-19 13:37:34,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 13:37:34,074 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1062 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 904 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:34,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1769 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1213 Invalid, 0 Unknown, 904 Unchecked, 5.5s Time] [2021-11-19 13:37:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-11-19 13:37:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1030. [2021-11-19 13:37:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 665 states have (on average 1.7338345864661655) internal successors, (1153), 1024 states have internal predecessors, (1153), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1179 transitions. [2021-11-19 13:37:34,103 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1179 transitions. Word has length 60 [2021-11-19 13:37:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:34,104 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 1179 transitions. [2021-11-19 13:37:34,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1179 transitions. [2021-11-19 13:37:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 13:37:34,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:34,106 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] [2021-11-19 13:37:34,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:34,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:34,324 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 13:37:34,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:34,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42210896] [2021-11-19 13:37:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:34,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:34,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:34,327 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:34,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:37:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:34,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:34,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:34,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:34,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-19 13:37:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:35,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:35,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42210896] [2021-11-19 13:37:35,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42210896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:35,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:35,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:37:35,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116618723] [2021-11-19 13:37:35,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:35,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:37:35,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:37:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:37:35,262 INFO L87 Difference]: Start difference. First operand 1030 states and 1179 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-19 13:37:37,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:37,589 INFO L93 Difference]: Finished difference Result 1028 states and 1177 transitions. [2021-11-19 13:37:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:37:37,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-19 13:37:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:37,595 INFO L225 Difference]: With dead ends: 1028 [2021-11-19 13:37:37,595 INFO L226 Difference]: Without dead ends: 1028 [2021-11-19 13:37:37,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:37:37,596 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 673 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:37,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 942 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:37:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-11-19 13:37:37,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2021-11-19 13:37:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 665 states have (on average 1.7308270676691728) internal successors, (1151), 1022 states have internal predecessors, (1151), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:37,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1177 transitions. [2021-11-19 13:37:37,620 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1177 transitions. Word has length 62 [2021-11-19 13:37:37,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:37,621 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 1177 transitions. [2021-11-19 13:37:37,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-19 13:37:37,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1177 transitions. [2021-11-19 13:37:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:37:37,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:37,623 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] [2021-11-19 13:37:37,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 13:37:37,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:37,850 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:37,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 13:37:37,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:37,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392677511] [2021-11-19 13:37:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:37,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:37,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:37,854 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:37:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:38,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:37:38,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:38,295 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 [2021-11-19 13:37:38,310 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 22 treesize of output 18 [2021-11-19 13:37:38,354 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 [2021-11-19 13:37:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:38,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:38,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:38,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392677511] [2021-11-19 13:37:38,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392677511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:38,544 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:38,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:37:38,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624452436] [2021-11-19 13:37:38,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:38,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:37:38,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:37:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:37:38,548 INFO L87 Difference]: Start difference. First operand 1028 states and 1177 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:41,857 INFO L93 Difference]: Finished difference Result 1027 states and 1176 transitions. [2021-11-19 13:37:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:37:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:37:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:41,864 INFO L225 Difference]: With dead ends: 1027 [2021-11-19 13:37:41,865 INFO L226 Difference]: Without dead ends: 1027 [2021-11-19 13:37:41,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:37:41,866 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 4 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:41,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2314 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 13:37:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-11-19 13:37:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2021-11-19 13:37:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 665 states have (on average 1.7293233082706767) internal successors, (1150), 1021 states have internal predecessors, (1150), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:41,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1176 transitions. [2021-11-19 13:37:41,891 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1176 transitions. Word has length 65 [2021-11-19 13:37:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:41,891 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1176 transitions. [2021-11-19 13:37:41,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:41,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1176 transitions. [2021-11-19 13:37:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:37:41,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:41,893 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] [2021-11-19 13:37:41,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:42,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:42,129 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 13:37:42,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:42,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933095961] [2021-11-19 13:37:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:42,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:42,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:42,132 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:42,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:37:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:42,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:37:42,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:42,590 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 [2021-11-19 13:37:42,624 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 [2021-11-19 13:37:42,638 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 [2021-11-19 13:37:42,719 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 [2021-11-19 13:37:42,724 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 [2021-11-19 13:37:42,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:42,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:43,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:43,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933095961] [2021-11-19 13:37:43,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933095961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:43,130 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:43,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:37:43,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161824469] [2021-11-19 13:37:43,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:43,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:37:43,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:37:43,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:37:43,132 INFO L87 Difference]: Start difference. First operand 1027 states and 1176 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-19 13:37:52,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:52,710 INFO L93 Difference]: Finished difference Result 1026 states and 1175 transitions. [2021-11-19 13:37:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:37:52,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:37:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:52,717 INFO L225 Difference]: With dead ends: 1026 [2021-11-19 13:37:52,717 INFO L226 Difference]: Without dead ends: 1026 [2021-11-19 13:37:52,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:37:52,718 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 3 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:52,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2824 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-19 13:37:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-11-19 13:37:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2021-11-19 13:37:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 664 states have (on average 1.730421686746988) internal successors, (1149), 1020 states have internal predecessors, (1149), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:37:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1175 transitions. [2021-11-19 13:37:52,742 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1175 transitions. Word has length 65 [2021-11-19 13:37:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:52,742 INFO L470 AbstractCegarLoop]: Abstraction has 1026 states and 1175 transitions. [2021-11-19 13:37:52,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-19 13:37:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1175 transitions. [2021-11-19 13:37:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 13:37:52,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:52,744 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] [2021-11-19 13:37:52,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 13:37:52,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:52,961 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:52,962 INFO L85 PathProgramCache]: Analyzing trace with hash 864578415, now seen corresponding path program 1 times [2021-11-19 13:37:52,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:52,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546600258] [2021-11-19 13:37:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:52,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:52,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:52,965 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:53,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:37:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:53,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:37:53,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:53,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:53,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:53,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546600258] [2021-11-19 13:37:53,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546600258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:53,724 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:53,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:37:53,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693809477] [2021-11-19 13:37:53,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:53,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:37:53,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:53,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:37:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:37:53,727 INFO L87 Difference]: Start difference. First operand 1026 states and 1175 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:37:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:53,868 INFO L93 Difference]: Finished difference Result 1036 states and 1188 transitions. [2021-11-19 13:37:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:37:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-19 13:37:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:53,882 INFO L225 Difference]: With dead ends: 1036 [2021-11-19 13:37:53,882 INFO L226 Difference]: Without dead ends: 1036 [2021-11-19 13:37:53,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:37:53,885 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 11 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:53,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1778 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:37:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-11-19 13:37:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2021-11-19 13:37:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 672 states have (on average 1.7276785714285714) internal successors, (1161), 1029 states have internal predecessors, (1161), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-19 13:37:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1188 transitions. [2021-11-19 13:37:53,962 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1188 transitions. Word has length 73 [2021-11-19 13:37:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:53,963 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1188 transitions. [2021-11-19 13:37:53,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:37:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1188 transitions. [2021-11-19 13:37:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:37:53,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:53,967 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] [2021-11-19 13:37:53,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:54,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:54,185 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1645234929, now seen corresponding path program 1 times [2021-11-19 13:37:54,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:54,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243264427] [2021-11-19 13:37:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:54,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:54,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:54,189 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:54,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:37:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:54,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:37:54,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:54,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:55,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:55,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243264427] [2021-11-19 13:37:55,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243264427] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:55,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [155064812] [2021-11-19 13:37:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:55,092 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:55,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:37:55,094 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:37:55,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 13:37:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:55,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:37:55,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:55,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:55,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [155064812] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:55,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889739670] [2021-11-19 13:37:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:55,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:37:55,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:37:55,909 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:37:55,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 13:37:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:56,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:37:56,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:56,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:56,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889739670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:56,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:37:56,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 13:37:56,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46703764] [2021-11-19 13:37:56,766 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:37:56,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:37:56,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:37:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:37:56,769 INFO L87 Difference]: Start difference. First operand 1036 states and 1188 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:37:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:57,523 INFO L93 Difference]: Finished difference Result 1050 states and 1205 transitions. [2021-11-19 13:37:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:37:57,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-19 13:37:57,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:57,532 INFO L225 Difference]: With dead ends: 1050 [2021-11-19 13:37:57,532 INFO L226 Difference]: Without dead ends: 1044 [2021-11-19 13:37:57,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:37:57,533 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 51 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:57,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 3556 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:37:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-11-19 13:37:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1042. [2021-11-19 13:37:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 678 states have (on average 1.7227138643067847) internal successors, (1168), 1035 states have internal predecessors, (1168), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-19 13:37:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1195 transitions. [2021-11-19 13:37:57,568 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1195 transitions. Word has length 75 [2021-11-19 13:37:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:57,569 INFO L470 AbstractCegarLoop]: Abstraction has 1042 states and 1195 transitions. [2021-11-19 13:37:57,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:37:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1195 transitions. [2021-11-19 13:37:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:37:57,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:57,571 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] [2021-11-19 13:37:57,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:57,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:58,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:58,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:37:58,192 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:37:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash -132870065, now seen corresponding path program 2 times [2021-11-19 13:37:58,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:58,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484101416] [2021-11-19 13:37:58,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:37:58,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:58,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:58,195 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:58,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:37:58,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:37:58,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:37:58,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:37:58,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:58,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:59,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:59,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484101416] [2021-11-19 13:37:59,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484101416] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:59,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1071406777] [2021-11-19 13:37:59,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:37:59,488 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:59,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:37:59,500 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:37:59,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:38:00,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:38:00,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:38:00,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:38:00,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:00,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:00,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1071406777] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:38:00,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792187208] [2021-11-19 13:38:00,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:38:00,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:38:00,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:38:00,958 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:38:00,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 13:38:47,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:38:47,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:38:47,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:38:47,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:47,986 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 [2021-11-19 13:38:48,336 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:38:48,337 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 13 treesize of output 13 [2021-11-19 13:38:48,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:38:48,452 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 [2021-11-19 13:38:48,467 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 [2021-11-19 13:38:48,783 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 31 treesize of output 19 [2021-11-19 13:38:48,790 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 19 treesize of output 13 [2021-11-19 13:41:22,325 WARN L227 SmtUtils]: Spent 37.95s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:41:22,326 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 13:41:22,326 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 143 treesize of output 135 [2021-11-19 13:41:43,108 WARN L227 SmtUtils]: Spent 20.77s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:41:43,109 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 13:41:43,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-19 13:41:54,566 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:41:54,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-19 13:41:54,589 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:41:54,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-19 13:42:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:06,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:23,190 WARN L227 SmtUtils]: Spent 15.64s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:42:46,549 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (let ((.cse0 (bvadd .cse2 (_ bv20 32)))) (and (bvule .cse0 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (bvule (bvadd (_ bv16 32) .cse2) .cse0))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 .cse4) .cse5 .cse4) .cse6 .cse4) .cse7 .cse4) .cse8 .cse4) .cse9 .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-19 13:42:54,990 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse0 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))))) (forall ((|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 .cse4) .cse5 .cse4) .cse6 .cse4) .cse7 .cse4) .cse8 .cse4) .cse9 .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-19 13:43:00,646 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse5 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse6 .cse7) .cse8 .cse7) .cse9 .cse7) .cse10 .cse7) .cse11 .cse7) .cse12 .cse7))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse6 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse14 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse15) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse15) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse15) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse15) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse15) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse15))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse14) (bvadd .cse14 (_ bv20 32)))))))) is different from false [2021-11-19 13:44:08,639 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from true [2021-11-19 13:44:16,604 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse14 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse14) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse14))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse15 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse16) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse16) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse16) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse16) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse16))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse15) (bvadd .cse15 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse17 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse18) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse18) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse18) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse18) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse18) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32)))))))) is different from true [2021-11-19 13:46:33,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 13:46:33,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:46:33,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 13:46:33,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602847247] [2021-11-19 13:46:33,556 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 13:46:33,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:46:33,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:46:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:46:33,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1068, Unknown=115, NotChecked=370, Total=1722 [2021-11-19 13:46:33,559 INFO L87 Difference]: Start difference. First operand 1042 states and 1195 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:47:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:47:32,180 INFO L93 Difference]: Finished difference Result 1068 states and 1231 transitions. [2021-11-19 13:47:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 13:47:32,181 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-19 13:47:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:47:32,186 INFO L225 Difference]: With dead ends: 1068 [2021-11-19 13:47:32,186 INFO L226 Difference]: Without dead ends: 1064 [2021-11-19 13:47:32,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 391.5s TimeCoverageRelationStatistics Valid=510, Invalid=2456, Unknown=134, NotChecked=560, Total=3660 [2021-11-19 13:47:32,188 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 62 mSDsluCounter, 9769 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 10663 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:47:32,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 10663 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:47:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-11-19 13:47:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1054. [2021-11-19 13:47:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 690 states have (on average 1.7159420289855072) internal successors, (1184), 1047 states have internal predecessors, (1184), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-19 13:47:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1211 transitions. [2021-11-19 13:47:32,211 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1211 transitions. Word has length 79 [2021-11-19 13:47:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:47:32,212 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1211 transitions. [2021-11-19 13:47:32,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:47:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1211 transitions. [2021-11-19 13:47:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:47:32,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:47:32,213 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:47:32,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:32,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:32,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:32,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:47:32,819 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 13:47:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:47:32,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1141860047, now seen corresponding path program 3 times [2021-11-19 13:47:32,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:47:32,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189643285] [2021-11-19 13:47:32,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:47:32,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:47:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:47:32,821 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:47:32,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:47:33,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:47:33,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:47:33,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:47:33,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:47:34,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:47:38,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:47:38,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189643285] [2021-11-19 13:47:38,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189643285] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:47:38,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [79828629] [2021-11-19 13:47:38,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:47:38,106 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:47:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:47:38,112 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:47:38,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 13:47:40,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:47:40,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:47:40,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:47:40,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:47:40,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:47:41,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [79828629] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:47:41,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273571849] [2021-11-19 13:47:41,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:47:41,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:47:41,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:47:41,151 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:47:41,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7fbb16-3fe5-43de-b03a-e8ca74bb887a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process