./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b39a262e58c4b59fb1c3af72226955d8a31f5200 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b39a262e58c4b59fb1c3af72226955d8a31f5200 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:01:54,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:01:54,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:01:54,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:01:54,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:01:54,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:01:54,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:01:54,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:01:54,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:01:54,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:01:54,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:01:54,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:01:54,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:01:54,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:01:54,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:01:54,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:01:54,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:01:54,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:01:54,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:01:54,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:01:54,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:01:54,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:01:54,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:01:54,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:01:54,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:01:54,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:01:54,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:01:54,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:01:54,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:01:54,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:01:54,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:01:54,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:01:54,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:01:54,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:01:54,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:01:54,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:01:54,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:01:54,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:01:54,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:01:54,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:01:54,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:01:54,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-10-13 08:01:54,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:01:54,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:01:54,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:01:54,889 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:01:54,890 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:01:54,890 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:01:54,890 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:01:54,891 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:01:54,891 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:01:54,891 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:01:54,891 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:01:54,892 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:01:54,892 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:01:54,892 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:01:54,893 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:01:54,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 08:01:54,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 08:01:54,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:01:54,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:01:54,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:01:54,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:01:54,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:01:54,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:01:54,896 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 08:01:54,896 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 08:01:54,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:01:54,897 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:01:54,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:01:54,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:01:54,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:01:54,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:01:54,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:01:54,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:01:54,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:01:54,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:01:54,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:01:54,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:01:54,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:01:54,900 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_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39a262e58c4b59fb1c3af72226955d8a31f5200 [2021-10-13 08:01:55,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:01:55,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:01:55,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:01:55,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:01:55,292 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:01:55,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2021-10-13 08:01:55,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/bf19fd15a/ff4140c8bad74c8da912618891605a49/FLAG76f632eee [2021-10-13 08:01:56,158 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:01:56,159 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2021-10-13 08:01:56,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/bf19fd15a/ff4140c8bad74c8da912618891605a49/FLAG76f632eee [2021-10-13 08:01:56,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/bf19fd15a/ff4140c8bad74c8da912618891605a49 [2021-10-13 08:01:56,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:01:56,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:01:56,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:01:56,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:01:56,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:01:56,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:01:56" (1/1) ... [2021-10-13 08:01:56,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6efc5388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:56, skipping insertion in model container [2021-10-13 08:01:56,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:01:56" (1/1) ... [2021-10-13 08:01:56,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:01:56,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:01:56,941 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2021-10-13 08:01:56,947 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2021-10-13 08:01:56,951 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2021-10-13 08:01:56,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2021-10-13 08:01:56,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:01:56,982 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:01:57,044 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2021-10-13 08:01:57,045 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2021-10-13 08:01:57,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2021-10-13 08:01:57,047 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2021-10-13 08:01:57,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:01:57,096 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:01:57,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57 WrapperNode [2021-10-13 08:01:57,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:01:57,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:01:57,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:01:57,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:01:57,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:01:57,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:01:57,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:01:57,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:01:57,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:01:57,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:01:57,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:01:57,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:01:57,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (1/1) ... [2021-10-13 08:01:57,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:01:57,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:01:57,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:01:57,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:01:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 08:01:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 08:01:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:01:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:01:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:01:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:01:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:01:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:01:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:01:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:01:58,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:01:58,373 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 08:01:58,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:01:58 BoogieIcfgContainer [2021-10-13 08:01:58,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:01:58,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:01:58,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:01:58,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:01:58,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:01:56" (1/3) ... [2021-10-13 08:01:58,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab9c269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:01:58, skipping insertion in model container [2021-10-13 08:01:58,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:01:57" (2/3) ... [2021-10-13 08:01:58,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab9c269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:01:58, skipping insertion in model container [2021-10-13 08:01:58,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:01:58" (3/3) ... [2021-10-13 08:01:58,390 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2021-10-13 08:01:58,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:01:58,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-10-13 08:01:58,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:01:58,479 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, mConcurrency=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 [2021-10-13 08:01:58,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-10-13 08:01:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 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) [2021-10-13 08:01:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 08:01:58,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:58,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 08:01:58,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:01:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:58,524 INFO L82 PathProgramCache]: Analyzing trace with hash 8374, now seen corresponding path program 1 times [2021-10-13 08:01:58,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:01:58,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816891118] [2021-10-13 08:01:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:58,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:01:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:58,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:01:58,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816891118] [2021-10-13 08:01:58,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816891118] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:58,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:58,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 08:01:58,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044869184] [2021-10-13 08:01:58,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:01:58,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:01:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:01:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:58,807 INFO L87 Difference]: Start difference. First operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 08:01:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:59,051 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2021-10-13 08:01:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:01:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-13 08:01:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:59,070 INFO L225 Difference]: With dead ends: 144 [2021-10-13 08:01:59,071 INFO L226 Difference]: Without dead ends: 143 [2021-10-13 08:01:59,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-13 08:01:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 119. [2021-10-13 08:01:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 118 states have internal predecessors, (127), 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) [2021-10-13 08:01:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-10-13 08:01:59,145 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 2 [2021-10-13 08:01:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:59,146 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-10-13 08:01:59,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 08:01:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-10-13 08:01:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 08:01:59,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:59,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 08:01:59,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:01:59,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:01:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:59,152 INFO L82 PathProgramCache]: Analyzing trace with hash 8375, now seen corresponding path program 1 times [2021-10-13 08:01:59,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:01:59,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114472991] [2021-10-13 08:01:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:59,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:01:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:59,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:01:59,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114472991] [2021-10-13 08:01:59,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114472991] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:59,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:59,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 08:01:59,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69647270] [2021-10-13 08:01:59,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:01:59,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:01:59,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:01:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:59,255 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 08:01:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:59,389 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-10-13 08:01:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:01:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-13 08:01:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:59,395 INFO L225 Difference]: With dead ends: 116 [2021-10-13 08:01:59,395 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 08:01:59,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 08:01:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-13 08:01:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 2.05) internal successors, (123), 115 states have internal predecessors, (123), 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) [2021-10-13 08:01:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2021-10-13 08:01:59,407 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 2 [2021-10-13 08:01:59,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:59,408 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2021-10-13 08:01:59,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 08:01:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2021-10-13 08:01:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 08:01:59,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:59,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 08:01:59,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:01:59,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:01:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:59,413 INFO L82 PathProgramCache]: Analyzing trace with hash 8054028, now seen corresponding path program 1 times [2021-10-13 08:01:59,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:01:59,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615393552] [2021-10-13 08:01:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:59,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:01:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:59,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:01:59,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615393552] [2021-10-13 08:01:59,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615393552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:59,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:59,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:01:59,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763147940] [2021-10-13 08:01:59,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:01:59,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:01:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:01:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:59,506 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 08:01:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:59,613 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2021-10-13 08:01:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:01:59,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-13 08:01:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:59,615 INFO L225 Difference]: With dead ends: 113 [2021-10-13 08:01:59,615 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 08:01:59,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 08:01:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-10-13 08:01:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 110 states have internal predecessors, (119), 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) [2021-10-13 08:01:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2021-10-13 08:01:59,624 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 4 [2021-10-13 08:01:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:59,624 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2021-10-13 08:01:59,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 08:01:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2021-10-13 08:01:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 08:01:59,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:59,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 08:01:59,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:01:59,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:01:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:59,627 INFO L82 PathProgramCache]: Analyzing trace with hash 8054029, now seen corresponding path program 1 times [2021-10-13 08:01:59,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:01:59,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105749322] [2021-10-13 08:01:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:59,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:01:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:59,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:01:59,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105749322] [2021-10-13 08:01:59,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105749322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:59,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:59,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:01:59,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464700170] [2021-10-13 08:01:59,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:01:59,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:01:59,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:01:59,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:59,699 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 08:01:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:01:59,832 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2021-10-13 08:01:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:01:59,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-13 08:01:59,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:01:59,836 INFO L225 Difference]: With dead ends: 126 [2021-10-13 08:01:59,836 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 08:01:59,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:01:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 08:01:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2021-10-13 08:01:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 66 states have (on average 1.8484848484848484) internal successors, (122), 113 states have internal predecessors, (122), 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) [2021-10-13 08:01:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2021-10-13 08:01:59,859 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 4 [2021-10-13 08:01:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:01:59,860 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2021-10-13 08:01:59,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 08:01:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2021-10-13 08:01:59,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:01:59,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:01:59,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:01:59,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 08:01:59,862 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:01:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:01:59,863 INFO L82 PathProgramCache]: Analyzing trace with hash -812908213, now seen corresponding path program 1 times [2021-10-13 08:01:59,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:01:59,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976411631] [2021-10-13 08:01:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:01:59,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:01:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:01:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:01:59,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:01:59,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976411631] [2021-10-13 08:01:59,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976411631] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:01:59,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:01:59,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:01:59,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984375572] [2021-10-13 08:01:59,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:01:59,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:01:59,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:01:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:01:59,998 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-13 08:02:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:00,174 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2021-10-13 08:02:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:02:00,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-10-13 08:02:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:00,176 INFO L225 Difference]: With dead ends: 116 [2021-10-13 08:02:00,176 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 08:02:00,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:00,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 08:02:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2021-10-13 08:02:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 104 states have internal predecessors, (115), 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) [2021-10-13 08:02:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2021-10-13 08:02:00,200 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 8 [2021-10-13 08:02:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:00,201 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2021-10-13 08:02:00,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-13 08:02:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2021-10-13 08:02:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:02:00,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:00,205 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:00,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 08:02:00,206 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:00,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:00,207 INFO L82 PathProgramCache]: Analyzing trace with hash -812908212, now seen corresponding path program 1 times [2021-10-13 08:02:00,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:00,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231402757] [2021-10-13 08:02:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:00,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:00,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:00,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231402757] [2021-10-13 08:02:00,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231402757] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:00,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:00,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:02:00,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665132063] [2021-10-13 08:02:00,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:02:00,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:02:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:02:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:02:00,331 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2021-10-13 08:02:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:00,663 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2021-10-13 08:02:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:02:00,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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 [2021-10-13 08:02:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:00,665 INFO L225 Difference]: With dead ends: 135 [2021-10-13 08:02:00,665 INFO L226 Difference]: Without dead ends: 135 [2021-10-13 08:02:00,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:02:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-13 08:02:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2021-10-13 08:02:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 110 states have internal predecessors, (122), 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) [2021-10-13 08:02:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2021-10-13 08:02:00,670 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 8 [2021-10-13 08:02:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:00,670 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2021-10-13 08:02:00,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2021-10-13 08:02:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2021-10-13 08:02:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:02:00,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:00,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:00,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 08:02:00,672 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 479237399, now seen corresponding path program 1 times [2021-10-13 08:02:00,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:00,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800725444] [2021-10-13 08:02:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:00,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:00,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:00,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800725444] [2021-10-13 08:02:00,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800725444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:00,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:00,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:02:00,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129108906] [2021-10-13 08:02:00,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:02:00,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:02:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:02:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:00,732 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 08:02:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:00,937 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2021-10-13 08:02:00,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:02:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-10-13 08:02:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:00,940 INFO L225 Difference]: With dead ends: 144 [2021-10-13 08:02:00,940 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 08:02:00,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:02:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 08:02:00,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2021-10-13 08:02:00,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 111 states have internal predecessors, (123), 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) [2021-10-13 08:02:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-10-13 08:02:00,947 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 10 [2021-10-13 08:02:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:00,948 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-10-13 08:02:00,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 08:02:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2021-10-13 08:02:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:02:00,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:00,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:00,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 08:02:00,950 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:00,950 INFO L82 PathProgramCache]: Analyzing trace with hash 479463659, now seen corresponding path program 1 times [2021-10-13 08:02:00,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:00,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54563664] [2021-10-13 08:02:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:00,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:01,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:01,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54563664] [2021-10-13 08:02:01,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54563664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:01,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:01,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:02:01,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130035643] [2021-10-13 08:02:01,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:02:01,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:02:01,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:02:01,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:01,051 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 08:02:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:01,239 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-10-13 08:02:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:02:01,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-10-13 08:02:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:01,241 INFO L225 Difference]: With dead ends: 111 [2021-10-13 08:02:01,241 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 08:02:01,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:02:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 08:02:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-13 08:02:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.5844155844155845) internal successors, (122), 110 states have internal predecessors, (122), 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) [2021-10-13 08:02:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2021-10-13 08:02:01,247 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 10 [2021-10-13 08:02:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:01,247 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2021-10-13 08:02:01,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 08:02:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2021-10-13 08:02:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:02:01,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:01,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:01,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 08:02:01,249 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:01,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash 479463660, now seen corresponding path program 1 times [2021-10-13 08:02:01,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:01,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292377905] [2021-10-13 08:02:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:01,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:01,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:01,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292377905] [2021-10-13 08:02:01,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292377905] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:01,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:01,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:02:01,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520095654] [2021-10-13 08:02:01,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:02:01,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:02:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:02:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:01,402 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 08:02:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:01,583 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2021-10-13 08:02:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:02:01,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-10-13 08:02:01,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:01,585 INFO L225 Difference]: With dead ends: 111 [2021-10-13 08:02:01,585 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 08:02:01,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:02:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 08:02:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2021-10-13 08:02:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 105 states have internal predecessors, (117), 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) [2021-10-13 08:02:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-10-13 08:02:01,589 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 10 [2021-10-13 08:02:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:01,590 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-10-13 08:02:01,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-13 08:02:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-10-13 08:02:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 08:02:01,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:01,591 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:01,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 08:02:01,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash 494053857, now seen corresponding path program 1 times [2021-10-13 08:02:01,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:01,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9092165] [2021-10-13 08:02:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:01,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:01,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:01,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9092165] [2021-10-13 08:02:01,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9092165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:01,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:01,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 08:02:01,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729550986] [2021-10-13 08:02:01,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:02:01,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:02:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:02:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:02:01,807 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:02,055 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2021-10-13 08:02:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:02:02,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 08:02:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:02,058 INFO L225 Difference]: With dead ends: 158 [2021-10-13 08:02:02,058 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 08:02:02,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:02:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 08:02:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 113. [2021-10-13 08:02:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 112 states have internal predecessors, (125), 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) [2021-10-13 08:02:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2021-10-13 08:02:02,063 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 13 [2021-10-13 08:02:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:02,063 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2021-10-13 08:02:02,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2021-10-13 08:02:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:02:02,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:02,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:02,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 08:02:02,065 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash 947851196, now seen corresponding path program 1 times [2021-10-13 08:02:02,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:02,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119500125] [2021-10-13 08:02:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:02,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:02,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:02,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119500125] [2021-10-13 08:02:02,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119500125] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:02,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:02,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:02:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070610829] [2021-10-13 08:02:02,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:02:02,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:02:02,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:02:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:02,120 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2021-10-13 08:02:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:02,256 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-10-13 08:02:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:02:02,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:02:02,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:02,257 INFO L225 Difference]: With dead ends: 112 [2021-10-13 08:02:02,257 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 08:02:02,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:02:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 08:02:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-13 08:02:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 111 states have internal predecessors, (124), 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) [2021-10-13 08:02:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-10-13 08:02:02,262 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 15 [2021-10-13 08:02:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:02,262 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-10-13 08:02:02,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2021-10-13 08:02:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-10-13 08:02:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:02:02,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:02,263 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:02,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 08:02:02,264 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:02,265 INFO L82 PathProgramCache]: Analyzing trace with hash 947851197, now seen corresponding path program 1 times [2021-10-13 08:02:02,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:02,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498475494] [2021-10-13 08:02:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:02,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:02,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:02,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498475494] [2021-10-13 08:02:02,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498475494] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:02,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:02,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:02:02,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981792220] [2021-10-13 08:02:02,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:02:02,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:02:02,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:02:02,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:02,340 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2021-10-13 08:02:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:02,478 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2021-10-13 08:02:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:02:02,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:02:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:02,481 INFO L225 Difference]: With dead ends: 109 [2021-10-13 08:02:02,481 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 08:02:02,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:02,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 08:02:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2021-10-13 08:02:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.4375) internal successors, (115), 103 states have internal predecessors, (115), 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) [2021-10-13 08:02:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-10-13 08:02:02,488 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 15 [2021-10-13 08:02:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:02,488 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-13 08:02:02,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2021-10-13 08:02:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-10-13 08:02:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 08:02:02,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:02,492 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:02,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 08:02:02,492 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:02,495 INFO L82 PathProgramCache]: Analyzing trace with hash 405330386, now seen corresponding path program 1 times [2021-10-13 08:02:02,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:02:02,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145910074] [2021-10-13 08:02:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:02,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:02:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:02,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:02:02,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145910074] [2021-10-13 08:02:02,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145910074] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:02:02,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340226991] [2021-10-13 08:02:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:02,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:02:02,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:02:02,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:02:02,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:02:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:02,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:02:02,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:02,873 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 11 treesize of output 7 [2021-10-13 08:02:02,880 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 11 treesize of output 7 [2021-10-13 08:02:02,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:02,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-13 08:02:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:02,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-13 08:02:03,240 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 29 treesize of output 21 [2021-10-13 08:02:03,248 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 18 treesize of output 10 [2021-10-13 08:02:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:03,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:03,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 08:02:03,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:02:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:03,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340226991] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:02:03,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1165274153] [2021-10-13 08:02:03,503 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-13 08:02:03,503 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:02:03,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:02:03,515 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:02:03,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:02:03,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:02:03,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 08:02:03,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:02:03,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:02:03,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 08:02:03,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:03,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:03,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 08:02:03,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 08:02:03,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 08:02:03,614 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:02:03,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:02:03,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:03,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 08:02:03,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:02:03,641 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:128, output treesize:131 [2021-10-13 08:02:03,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:03,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 08:02:03,866 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_109| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:02:03,871 INFO L168 Benchmark]: Toolchain (without parser) took 7444.51 ms. Allocated memory was 104.9 MB in the beginning and 174.1 MB in the end (delta: 69.2 MB). Free memory was 72.8 MB in the beginning and 83.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:03,872 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:02:03,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.37 ms. Allocated memory is still 104.9 MB. Free memory was 72.6 MB in the beginning and 72.3 MB in the end (delta: 256.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:03,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.86 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 70.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:03,874 INFO L168 Benchmark]: Boogie Preprocessor took 88.09 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:03,875 INFO L168 Benchmark]: RCFGBuilder took 1105.93 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 68.6 MB in the beginning and 116.1 MB in the end (delta: -47.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:03,875 INFO L168 Benchmark]: TraceAbstraction took 5489.49 ms. Allocated memory was 144.7 MB in the beginning and 174.1 MB in the end (delta: 29.4 MB). Free memory was 115.3 MB in the beginning and 83.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:03,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.37 ms. Allocated memory is still 104.9 MB. Free memory was 72.6 MB in the beginning and 72.3 MB in the end (delta: 256.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.86 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 70.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.09 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1105.93 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 68.6 MB in the beginning and 116.1 MB in the end (delta: -47.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5489.49 ms. Allocated memory was 144.7 MB in the beginning and 174.1 MB in the end (delta: 29.4 MB). Free memory was 115.3 MB in the beginning and 83.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_109| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_109|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:02:03,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:02:07,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:02:07,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:02:07,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:02:07,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:02:07,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:02:07,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:02:07,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:02:07,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:02:07,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:02:07,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:02:07,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:02:07,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:02:07,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:02:07,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:02:07,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:02:07,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:02:07,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:02:07,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:02:07,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:02:07,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:02:07,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:02:07,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:02:07,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:02:07,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:02:07,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:02:07,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:02:07,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:02:07,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:02:07,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:02:07,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:02:07,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:02:07,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:02:07,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:02:07,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:02:07,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:02:07,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:02:07,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:02:07,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:02:07,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:02:07,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:02:07,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-10-13 08:02:07,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:02:07,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:02:07,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:02:07,239 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:02:07,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:02:07,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:02:07,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:02:07,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:02:07,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:02:07,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 08:02:07,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 08:02:07,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:02:07,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:02:07,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:02:07,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:02:07,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:02:07,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:02:07,246 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 08:02:07,246 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 08:02:07,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:02:07,247 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:02:07,247 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:02:07,248 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:02:07,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:02:07,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:02:07,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:02:07,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:02:07,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:02:07,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:02:07,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:02:07,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:02:07,250 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:02:07,251 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:02:07,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:02:07,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:02:07,251 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_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39a262e58c4b59fb1c3af72226955d8a31f5200 [2021-10-13 08:02:07,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:02:07,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:02:07,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:02:07,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:02:07,799 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:02:07,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2021-10-13 08:02:07,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/9baa11ae9/6865d9c1b3dd4f3bbf4d7a04af508447/FLAG4c6eaeadf [2021-10-13 08:02:08,680 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:02:08,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2021-10-13 08:02:08,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/9baa11ae9/6865d9c1b3dd4f3bbf4d7a04af508447/FLAG4c6eaeadf [2021-10-13 08:02:08,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/data/9baa11ae9/6865d9c1b3dd4f3bbf4d7a04af508447 [2021-10-13 08:02:08,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:02:08,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:02:08,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:02:08,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:02:08,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:02:08,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:02:08" (1/1) ... [2021-10-13 08:02:08,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ff3142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:08, skipping insertion in model container [2021-10-13 08:02:08,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:02:08" (1/1) ... [2021-10-13 08:02:08,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:02:08,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:02:09,364 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2021-10-13 08:02:09,367 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2021-10-13 08:02:09,369 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2021-10-13 08:02:09,370 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2021-10-13 08:02:09,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:02:09,407 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:02:09,479 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2021-10-13 08:02:09,481 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2021-10-13 08:02:09,482 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2021-10-13 08:02:09,483 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2021-10-13 08:02:09,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:02:09,527 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:02:09,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09 WrapperNode [2021-10-13 08:02:09,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:02:09,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:02:09,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:02:09,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:02:09,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:02:09,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:02:09,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:02:09,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:02:09,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:02:09,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:02:09,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:02:09,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:02:09,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (1/1) ... [2021-10-13 08:02:09,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:02:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:02:09,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:02:09,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 08:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:02:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:02:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:02:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 08:02:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:02:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:02:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:02:10,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:02:10,705 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 08:02:10,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:02:10 BoogieIcfgContainer [2021-10-13 08:02:10,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:02:10,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:02:10,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:02:10,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:02:10,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:02:08" (1/3) ... [2021-10-13 08:02:10,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b22e384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:02:10, skipping insertion in model container [2021-10-13 08:02:10,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:02:09" (2/3) ... [2021-10-13 08:02:10,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b22e384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:02:10, skipping insertion in model container [2021-10-13 08:02:10,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:02:10" (3/3) ... [2021-10-13 08:02:10,717 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2021-10-13 08:02:10,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:02:10,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-10-13 08:02:10,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:02:10,815 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, mConcurrency=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 [2021-10-13 08:02:10,815 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-10-13 08:02:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 69 states have (on average 2.1884057971014492) internal successors, (151), 130 states have internal predecessors, (151), 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) [2021-10-13 08:02:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 08:02:10,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:10,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 08:02:10,872 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:10,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:10,879 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-13 08:02:10,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:10,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785458087] [2021-10-13 08:02:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:10,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:10,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:10,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:10,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:02:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:11,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:02:11,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:11,093 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 [2021-10-13 08:02:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:11,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:11,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:11,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785458087] [2021-10-13 08:02:11,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785458087] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:11,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:11,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:02:11,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566004061] [2021-10-13 08:02:11,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:02:11,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:02:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:02:11,182 INFO L87 Difference]: Start difference. First operand has 131 states, 69 states have (on average 2.1884057971014492) internal successors, (151), 130 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:11,612 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2021-10-13 08:02:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:02:11,615 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 [2021-10-13 08:02:11,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:11,646 INFO L225 Difference]: With dead ends: 159 [2021-10-13 08:02:11,646 INFO L226 Difference]: Without dead ends: 157 [2021-10-13 08:02:11,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:02:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-13 08:02:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 131. [2021-10-13 08:02:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.9305555555555556) internal successors, (139), 130 states have internal predecessors, (139), 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) [2021-10-13 08:02:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2021-10-13 08:02:11,696 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 3 [2021-10-13 08:02:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:11,697 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2021-10-13 08:02:11,697 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) [2021-10-13 08:02:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2021-10-13 08:02:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 08:02:11,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:11,698 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 08:02:11,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:11,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:11,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-13 08:02:11,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:11,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119616999] [2021-10-13 08:02:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:11,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:11,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:11,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:11,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:02:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:11,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:02:11,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:11,999 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 [2021-10-13 08:02:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:12,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:12,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:12,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119616999] [2021-10-13 08:02:12,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119616999] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:12,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:12,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 08:02:12,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103597940] [2021-10-13 08:02:12,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:02:12,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:02:12,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:02:12,132 INFO L87 Difference]: Start difference. First operand 131 states and 139 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) [2021-10-13 08:02:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:12,546 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2021-10-13 08:02:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:02:12,547 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 [2021-10-13 08:02:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:12,549 INFO L225 Difference]: With dead ends: 128 [2021-10-13 08:02:12,549 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 08:02:12,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:02:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 08:02:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-13 08:02:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 72 states have (on average 1.875) internal successors, (135), 127 states have internal predecessors, (135), 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) [2021-10-13 08:02:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2021-10-13 08:02:12,564 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 3 [2021-10-13 08:02:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:12,564 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2021-10-13 08:02:12,565 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) [2021-10-13 08:02:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2021-10-13 08:02:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:02:12,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:12,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:02:12,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:12,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:12,779 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2021-10-13 08:02:12,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:12,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385628311] [2021-10-13 08:02:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:12,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:12,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:12,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:12,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:02:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:12,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:02:12,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:12,880 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 [2021-10-13 08:02:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:12,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:12,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:12,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385628311] [2021-10-13 08:02:12,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385628311] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:12,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:12,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:02:12,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303483822] [2021-10-13 08:02:12,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:02:12,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:12,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:02:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:02:12,926 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-13 08:02:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:13,184 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-13 08:02:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:02:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-10-13 08:02:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:13,186 INFO L225 Difference]: With dead ends: 125 [2021-10-13 08:02:13,186 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 08:02:13,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:02:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 08:02:13,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-10-13 08:02:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 73 states have (on average 1.7945205479452055) internal successors, (131), 122 states have internal predecessors, (131), 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) [2021-10-13 08:02:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2021-10-13 08:02:13,204 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 6 [2021-10-13 08:02:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:13,204 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2021-10-13 08:02:13,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-13 08:02:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2021-10-13 08:02:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:02:13,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:13,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:02:13,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:13,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:13,423 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:13,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:13,424 INFO L82 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2021-10-13 08:02:13,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:13,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636119610] [2021-10-13 08:02:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:13,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:13,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:13,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:13,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:02:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:13,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:02:13,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:13,559 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 [2021-10-13 08:02:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:13,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:13,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:13,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636119610] [2021-10-13 08:02:13,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636119610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:13,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:13,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 08:02:13,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766397978] [2021-10-13 08:02:13,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:02:13,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:02:13,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:02:13,663 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-13 08:02:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:14,117 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2021-10-13 08:02:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:02:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 6 [2021-10-13 08:02:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:14,120 INFO L225 Difference]: With dead ends: 141 [2021-10-13 08:02:14,120 INFO L226 Difference]: Without dead ends: 141 [2021-10-13 08:02:14,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:02:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-13 08:02:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2021-10-13 08:02:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 80 states have (on average 1.7) internal successors, (136), 127 states have internal predecessors, (136), 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) [2021-10-13 08:02:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2021-10-13 08:02:14,139 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 6 [2021-10-13 08:02:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:14,140 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2021-10-13 08:02:14,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-13 08:02:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2021-10-13 08:02:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:02:14,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:14,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:14,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:14,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:14,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:14,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1113926540, now seen corresponding path program 1 times [2021-10-13 08:02:14,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:14,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139776131] [2021-10-13 08:02:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:14,358 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:14,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:14,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:02:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:14,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:02:14,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:14,505 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 [2021-10-13 08:02:14,582 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 08:02:14,589 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 18 treesize of output 23 [2021-10-13 08:02:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:14,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:14,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:14,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139776131] [2021-10-13 08:02:14,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139776131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:14,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:14,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:02:14,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709804502] [2021-10-13 08:02:14,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:02:14,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:14,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:02:14,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:02:14,695 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-13 08:02:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:15,158 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2021-10-13 08:02:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:02:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-13 08:02:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:15,160 INFO L225 Difference]: With dead ends: 132 [2021-10-13 08:02:15,160 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 08:02:15,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:15,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 08:02:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 119. [2021-10-13 08:02:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 118 states have internal predecessors, (129), 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) [2021-10-13 08:02:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2021-10-13 08:02:15,168 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 10 [2021-10-13 08:02:15,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:15,169 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2021-10-13 08:02:15,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-13 08:02:15,169 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2021-10-13 08:02:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:02:15,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:15,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:15,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:15,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:15,371 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:15,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:15,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1113926541, now seen corresponding path program 1 times [2021-10-13 08:02:15,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:15,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557553183] [2021-10-13 08:02:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:15,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:15,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:15,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:15,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:02:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:15,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:02:15,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:15,526 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 [2021-10-13 08:02:15,626 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 08:02:15,627 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 12 treesize of output 14 [2021-10-13 08:02:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:15,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:16,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:16,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557553183] [2021-10-13 08:02:16,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557553183] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:16,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:16,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-10-13 08:02:16,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134965339] [2021-10-13 08:02:16,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:02:16,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:16,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:02:16,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:02:16,019 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:17,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:17,504 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2021-10-13 08:02:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:02:17,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:02:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:17,506 INFO L225 Difference]: With dead ends: 171 [2021-10-13 08:02:17,506 INFO L226 Difference]: Without dead ends: 171 [2021-10-13 08:02:17,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 275.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:02:17,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-13 08:02:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 121. [2021-10-13 08:02:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.5172413793103448) internal successors, (132), 120 states have internal predecessors, (132), 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) [2021-10-13 08:02:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2021-10-13 08:02:17,515 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 10 [2021-10-13 08:02:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:17,515 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2021-10-13 08:02:17,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2021-10-13 08:02:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 08:02:17,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:17,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:17,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 08:02:17,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:17,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1036529431, now seen corresponding path program 1 times [2021-10-13 08:02:17,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:17,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955189258] [2021-10-13 08:02:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:17,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:17,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:17,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:02:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:17,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:02:17,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:17,849 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 [2021-10-13 08:02:17,896 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:02:17,896 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 15 treesize of output 15 [2021-10-13 08:02:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:17,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:18,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:18,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955189258] [2021-10-13 08:02:18,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955189258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:18,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:18,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:02:18,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611280130] [2021-10-13 08:02:18,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:02:18,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:18,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:02:18,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:02:18,021 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-13 08:02:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:18,477 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2021-10-13 08:02:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:02:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 12 [2021-10-13 08:02:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:18,480 INFO L225 Difference]: With dead ends: 162 [2021-10-13 08:02:18,480 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 08:02:18,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:02:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 08:02:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2021-10-13 08:02:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 121 states have internal predecessors, (133), 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) [2021-10-13 08:02:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2021-10-13 08:02:18,488 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 12 [2021-10-13 08:02:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:18,488 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2021-10-13 08:02:18,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-13 08:02:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2021-10-13 08:02:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 08:02:18,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:18,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:18,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:18,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:18,708 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash -309587570, now seen corresponding path program 1 times [2021-10-13 08:02:18,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:18,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429110061] [2021-10-13 08:02:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:18,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:18,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:18,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:02:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:18,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:02:18,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:18,867 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 [2021-10-13 08:02:18,890 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 20 treesize of output 16 [2021-10-13 08:02:18,927 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 21 treesize of output 13 [2021-10-13 08:02:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:18,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:19,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:19,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429110061] [2021-10-13 08:02:19,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429110061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:19,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:19,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:02:19,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91481068] [2021-10-13 08:02:19,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:02:19,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:02:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:02:19,034 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:19,625 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2021-10-13 08:02:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:02:19,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 08:02:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:19,626 INFO L225 Difference]: With dead ends: 122 [2021-10-13 08:02:19,627 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 08:02:19,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:02:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 08:02:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2021-10-13 08:02:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 1.4831460674157304) internal successors, (132), 120 states have internal predecessors, (132), 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) [2021-10-13 08:02:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2021-10-13 08:02:19,632 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 14 [2021-10-13 08:02:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:19,633 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2021-10-13 08:02:19,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2021-10-13 08:02:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 08:02:19,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:19,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:19,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:19,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:19,850 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:19,851 INFO L82 PathProgramCache]: Analyzing trace with hash -309587569, now seen corresponding path program 1 times [2021-10-13 08:02:19,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:19,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102776692] [2021-10-13 08:02:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:19,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:19,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:19,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:19,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 08:02:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:19,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:02:19,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:20,011 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 [2021-10-13 08:02:20,044 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 11 treesize of output 7 [2021-10-13 08:02:20,051 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 17 treesize of output 13 [2021-10-13 08:02:20,129 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 23 [2021-10-13 08:02:20,133 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 20 treesize of output 12 [2021-10-13 08:02:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:20,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:20,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:20,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102776692] [2021-10-13 08:02:20,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102776692] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:20,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:20,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 08:02:20,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259734914] [2021-10-13 08:02:20,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:02:20,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:20,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:02:20,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:02:20,512 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2021-10-13 08:02:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:22,513 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2021-10-13 08:02:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:02:22,514 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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 14 [2021-10-13 08:02:22,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:22,515 INFO L225 Difference]: With dead ends: 142 [2021-10-13 08:02:22,515 INFO L226 Difference]: Without dead ends: 142 [2021-10-13 08:02:22,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 540.1ms TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:02:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-13 08:02:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2021-10-13 08:02:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 89 states have (on average 1.4382022471910112) internal successors, (128), 116 states have internal predecessors, (128), 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) [2021-10-13 08:02:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2021-10-13 08:02:22,521 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 14 [2021-10-13 08:02:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:22,521 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2021-10-13 08:02:22,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2021-10-13 08:02:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2021-10-13 08:02:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:02:22,522 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:22,523 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:22,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:22,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:22,736 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:22,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:22,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1562589153, now seen corresponding path program 1 times [2021-10-13 08:02:22,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:22,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332134750] [2021-10-13 08:02:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:22,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:22,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:22,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:22,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:02:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:22,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:02:22,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:22,911 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 [2021-10-13 08:02:22,999 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 15 treesize of output 7 [2021-10-13 08:02:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:23,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:23,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:23,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332134750] [2021-10-13 08:02:23,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332134750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:23,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:23,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-10-13 08:02:23,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824261798] [2021-10-13 08:02:23,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:02:23,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:23,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:02:23,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:02:23,112 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:23,795 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2021-10-13 08:02:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:02:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:02:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:23,797 INFO L225 Difference]: With dead ends: 177 [2021-10-13 08:02:23,797 INFO L226 Difference]: Without dead ends: 177 [2021-10-13 08:02:23,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:02:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-13 08:02:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 123. [2021-10-13 08:02:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 122 states have internal predecessors, (135), 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) [2021-10-13 08:02:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2021-10-13 08:02:23,803 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 15 [2021-10-13 08:02:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:23,804 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2021-10-13 08:02:23,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:02:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2021-10-13 08:02:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:02:23,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:23,806 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:02:23,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:24,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:24,023 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2057287877, now seen corresponding path program 1 times [2021-10-13 08:02:24,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:24,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354669753] [2021-10-13 08:02:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:24,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:24,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:24,026 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:24,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 08:02:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:24,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 08:02:24,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:24,205 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 11 treesize of output 7 [2021-10-13 08:02:24,215 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 11 treesize of output 7 [2021-10-13 08:02:24,281 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 08:02:24,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-13 08:02:24,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:24,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-13 08:02:24,515 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 29 treesize of output 21 [2021-10-13 08:02:24,519 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 18 treesize of output 10 [2021-10-13 08:02:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:24,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:24,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:24,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 08:02:24,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:24,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:02:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:24,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:24,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354669753] [2021-10-13 08:02:24,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354669753] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:02:24,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [191574032] [2021-10-13 08:02:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:24,899 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:02:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:02:24,902 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:02:24,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-13 08:02:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:25,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:02:25,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:25,195 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 [2021-10-13 08:02:25,290 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 08:02:25,290 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 18 treesize of output 23 [2021-10-13 08:02:25,391 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 11 treesize of output 7 [2021-10-13 08:02:25,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:25,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-13 08:02:26,031 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 50 treesize of output 38 [2021-10-13 08:02:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:26,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:26,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:26,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-13 08:02:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:26,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [191574032] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:02:26,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942453559] [2021-10-13 08:02:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:26,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:02:26,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:02:26,848 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:02:26,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 08:02:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:27,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 08:02:27,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:27,061 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 11 treesize of output 7 [2021-10-13 08:02:27,072 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 11 treesize of output 7 [2021-10-13 08:02:27,106 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-13 08:02:27,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-13 08:02:27,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:27,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-13 08:02:27,243 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 29 treesize of output 21 [2021-10-13 08:02:27,245 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 18 treesize of output 10 [2021-10-13 08:02:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:27,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:27,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:27,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-13 08:02:27,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:27,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:02:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:27,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942453559] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:02:27,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:02:27,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8, 8, 6, 6] total 25 [2021-10-13 08:02:27,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150525214] [2021-10-13 08:02:27,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 08:02:27,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:27,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 08:02:27,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-10-13 08:02:27,497 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 25 states, 25 states have (on average 3.28) internal successors, (82), 25 states have internal predecessors, (82), 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) [2021-10-13 08:02:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:30,952 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2021-10-13 08:02:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 08:02:30,953 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 25 states have internal predecessors, (82), 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 22 [2021-10-13 08:02:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:30,955 INFO L225 Difference]: With dead ends: 183 [2021-10-13 08:02:30,955 INFO L226 Difference]: Without dead ends: 183 [2021-10-13 08:02:30,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 2284.2ms TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 08:02:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-13 08:02:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 130. [2021-10-13 08:02:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.4019607843137254) internal successors, (143), 129 states have internal predecessors, (143), 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) [2021-10-13 08:02:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2021-10-13 08:02:30,961 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 22 [2021-10-13 08:02:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:30,962 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2021-10-13 08:02:30,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 25 states have internal predecessors, (82), 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) [2021-10-13 08:02:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2021-10-13 08:02:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:02:30,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:30,966 INFO L512 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] [2021-10-13 08:02:30,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:31,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 08:02:31,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-13 08:02:31,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:02:31,567 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:31,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2015269624, now seen corresponding path program 1 times [2021-10-13 08:02:31,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:31,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75254910] [2021-10-13 08:02:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:31,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:31,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:31,570 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:31,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 08:02:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:31,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:02:31,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:31,809 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 [2021-10-13 08:02:31,923 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 15 treesize of output 7 [2021-10-13 08:02:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:31,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:32,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:32,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75254910] [2021-10-13 08:02:32,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75254910] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:32,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:32,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2021-10-13 08:02:32,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333120841] [2021-10-13 08:02:32,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 08:02:32,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 08:02:32,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:02:32,068 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-10-13 08:02:32,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:32,743 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2021-10-13 08:02:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:02:32,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 22 [2021-10-13 08:02:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:32,746 INFO L225 Difference]: With dead ends: 154 [2021-10-13 08:02:32,746 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 08:02:32,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:02:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 08:02:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2021-10-13 08:02:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.392156862745098) internal successors, (142), 129 states have internal predecessors, (142), 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) [2021-10-13 08:02:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-10-13 08:02:32,751 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 22 [2021-10-13 08:02:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:32,752 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-10-13 08:02:32,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-10-13 08:02:32,752 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-10-13 08:02:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:02:32,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:32,754 INFO L512 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] [2021-10-13 08:02:32,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:32,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:32,960 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:32,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:32,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1383851026, now seen corresponding path program 1 times [2021-10-13 08:02:32,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:32,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424929437] [2021-10-13 08:02:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:32,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:32,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:32,962 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:32,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 08:02:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:33,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:02:33,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:33,284 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 [2021-10-13 08:02:33,297 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 21 treesize of output 17 [2021-10-13 08:02:33,320 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 21 treesize of output 13 [2021-10-13 08:02:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:33,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:33,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:33,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424929437] [2021-10-13 08:02:33,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424929437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:33,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:33,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:02:33,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200470119] [2021-10-13 08:02:33,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:02:33,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:02:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:02:33,403 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-13 08:02:33,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:33,923 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-10-13 08:02:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:02:33,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-10-13 08:02:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:33,925 INFO L225 Difference]: With dead ends: 130 [2021-10-13 08:02:33,925 INFO L226 Difference]: Without dead ends: 130 [2021-10-13 08:02:33,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:02:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-13 08:02:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2021-10-13 08:02:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 102 states have (on average 1.3823529411764706) internal successors, (141), 128 states have internal predecessors, (141), 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) [2021-10-13 08:02:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2021-10-13 08:02:33,930 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 22 [2021-10-13 08:02:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:33,930 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2021-10-13 08:02:33,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-13 08:02:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2021-10-13 08:02:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:02:33,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:33,932 INFO L512 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] [2021-10-13 08:02:33,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:34,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:34,133 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:34,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1383851027, now seen corresponding path program 1 times [2021-10-13 08:02:34,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:34,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178397375] [2021-10-13 08:02:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:34,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:34,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:34,136 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:34,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 08:02:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:34,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:02:34,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:34,422 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 [2021-10-13 08:02:34,452 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 11 treesize of output 7 [2021-10-13 08:02:34,459 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 17 treesize of output 13 [2021-10-13 08:02:34,499 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 23 [2021-10-13 08:02:34,503 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 20 treesize of output 12 [2021-10-13 08:02:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:34,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:34,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:34,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178397375] [2021-10-13 08:02:34,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178397375] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:02:34,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:02:34,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 08:02:34,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742926186] [2021-10-13 08:02:34,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:02:34,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:02:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:02:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:02:34,891 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-10-13 08:02:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:02:36,329 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2021-10-13 08:02:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:02:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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 22 [2021-10-13 08:02:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:02:36,331 INFO L225 Difference]: With dead ends: 148 [2021-10-13 08:02:36,332 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 08:02:36,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 387.6ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-13 08:02:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 08:02:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2021-10-13 08:02:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.35) internal successors, (135), 123 states have internal predecessors, (135), 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) [2021-10-13 08:02:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-10-13 08:02:36,337 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 22 [2021-10-13 08:02:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:02:36,337 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-10-13 08:02:36,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-10-13 08:02:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-10-13 08:02:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:02:36,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:02:36,339 INFO L512 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] [2021-10-13 08:02:36,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:36,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:36,552 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:02:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:02:36,553 INFO L82 PathProgramCache]: Analyzing trace with hash 99452763, now seen corresponding path program 1 times [2021-10-13 08:02:36,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:02:36,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797660077] [2021-10-13 08:02:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:36,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:02:36,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:02:36,555 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:02:36,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 08:02:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:36,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 08:02:36,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:36,945 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 [2021-10-13 08:02:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:37,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:02:37,078 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 11 treesize of output 7 [2021-10-13 08:02:37,092 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 11 treesize of output 7 [2021-10-13 08:02:37,180 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 15 treesize of output 7 [2021-10-13 08:02:37,190 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 7 treesize of output 3 [2021-10-13 08:02:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:37,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:02:37,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:02:37,296 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-13 08:02:37,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-13 08:02:37,365 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 15 treesize of output 7 [2021-10-13 08:02:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:37,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:37,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:37,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:02:37,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:37,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 08:02:39,754 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc6.base| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_7)))) (store .cse0 |ULTIMATE.start_main_#t~malloc6.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc6.base|) |c_ULTIMATE.start_main_#t~malloc6.offset| v_DerPreprocessor_6) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~malloc6.offset|) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:02:41,788 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc6.base| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_7)))) (store .cse0 |ULTIMATE.start_main_#t~malloc6.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc6.base|) (_ bv0 32) v_DerPreprocessor_6) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:02:43,816 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc6.base| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_7)))) (store .cse0 |ULTIMATE.start_main_#t~malloc6.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc6.base|) (_ bv0 32) v_DerPreprocessor_6) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:02:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 08:02:43,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:02:43,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797660077] [2021-10-13 08:02:43,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797660077] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:02:43,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [368696872] [2021-10-13 08:02:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:02:43,986 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:02:43,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:02:43,992 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:02:44,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 08:02:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:02:44,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:02:44,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:02:44,567 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 [2021-10-13 08:02:44,649 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 [2021-10-13 08:02:44,862 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:02:44,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-13 08:02:44,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:02:44,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:02:45,006 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 16 treesize of output 12 [2021-10-13 08:02:45,144 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 16 treesize of output 8 [2021-10-13 08:02:45,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:02:45,407 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:02:45,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:02:45,822 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:02:45,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 14 [2021-10-13 08:02:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:02:45,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:02:45,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:02:45,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:03:09,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:09,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 08:03:26,638 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.offset_82 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc6.base_17| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_17|))))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc6.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc6.base_17|) v_ULTIMATE.start_main_~end~0.offset_82 v_DerPreprocessor_8) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_82) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))))) is different from false [2021-10-13 08:03:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:28,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [368696872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:28,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584910771] [2021-10-13 08:03:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:03:28,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:03:28,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:03:28,788 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:03:28,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 08:03:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:03:29,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:03:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:03:29,238 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 [2021-10-13 08:03:29,326 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:03:29,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-13 08:03:29,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:03:29,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:03:29,386 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 16 treesize of output 12 [2021-10-13 08:03:29,455 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 16 treesize of output 8 [2021-10-13 08:03:29,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:03:29,573 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:03:29,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:03:29,864 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:03:29,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 14 [2021-10-13 08:03:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:29,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:03:29,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:29,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:03:42,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:03:42,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 08:03:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:03:56,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584910771] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:03:56,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:03:56,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12, 13, 13, 13] total 37 [2021-10-13 08:03:56,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150674634] [2021-10-13 08:03:56,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 08:03:56,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:03:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 08:03:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=857, Unknown=14, NotChecked=260, Total=1332 [2021-10-13 08:03:56,850 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 37 states have internal predecessors, (70), 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) [2021-10-13 08:03:59,391 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~end~0.offset_82 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc6.base_17| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_17|))))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc6.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc6.base_17|) v_ULTIMATE.start_main_~end~0.offset_82 v_DerPreprocessor_8) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_82) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))))) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc6.base| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_7)))) (store .cse1 |ULTIMATE.start_main_#t~malloc6.base| (store (store (select .cse1 |ULTIMATE.start_main_#t~malloc6.base|) (_ bv0 32) v_DerPreprocessor_6) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (_ bv1 1)))) is different from false [2021-10-13 08:04:01,407 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~end~0.base) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc6.base| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_7)))) (store .cse0 |ULTIMATE.start_main_#t~malloc6.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc6.base|) (_ bv0 32) v_DerPreprocessor_6) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= c_ULTIMATE.start_main_~end~0.offset c_ULTIMATE.start_main_~list~0.offset) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (_ bv1 1)))) is different from false [2021-10-13 08:04:03,424 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc6.base| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_7)))) (store .cse0 |ULTIMATE.start_main_#t~malloc6.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc6.base|) |c_ULTIMATE.start_main_#t~malloc6.offset| v_DerPreprocessor_6) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~malloc6.offset|) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) (not (= c_ULTIMATE.start_main_~list~0.base |c_ULTIMATE.start_main_#t~malloc6.base|)) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~end~0.base) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= c_ULTIMATE.start_main_~end~0.offset c_ULTIMATE.start_main_~list~0.offset) (= |c_ULTIMATE.start_main_#t~malloc6.offset| (_ bv0 32))) is different from false [2021-10-13 08:04:26,652 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~end~0.offset (_ bv0 32)) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) (_ bv4 32))) (exists ((ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~end~0.base (_ BitVec 32))) (and (= ~unnamed1~0~BLACK (select (select |c_#memory_int| ULTIMATE.start_main_~end~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset))) (not (= c_ULTIMATE.start_main_~list~0.base ULTIMATE.start_main_~end~0.base)))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_#t~malloc6.base_17| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_17|))))) (forall ((v_ULTIMATE.start_main_~end~0.offset_82 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc6.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc6.base_17|) v_ULTIMATE.start_main_~end~0.offset_82 v_DerPreprocessor_8) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_82) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))))) (exists ((v_ULTIMATE.start_main_~end~0.base_96 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_79 (_ BitVec 32))) (and (not (= c_ULTIMATE.start_main_~end~0.base v_ULTIMATE.start_main_~end~0.base_96)) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| v_ULTIMATE.start_main_~end~0.base_96) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_79))))) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (forall ((v_ULTIMATE.start_main_~end~0.offset_82 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_9)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc6.base| (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc6.base|) v_ULTIMATE.start_main_~end~0.offset_82 v_DerPreprocessor_8) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_82) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~end~0.base))) is different from false [2021-10-13 08:04:43,529 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification that was a NOOP. DAG size: 33 [2021-10-13 08:05:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:09,518 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2021-10-13 08:05:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 08:05:09,519 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 37 states have internal predecessors, (70), 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 23 [2021-10-13 08:05:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:09,521 INFO L225 Difference]: With dead ends: 341 [2021-10-13 08:05:09,522 INFO L226 Difference]: Without dead ends: 341 [2021-10-13 08:05:09,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 132646.5ms TimeCoverageRelationStatistics Valid=513, Invalid=2136, Unknown=35, NotChecked=856, Total=3540 [2021-10-13 08:05:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-13 08:05:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 145. [2021-10-13 08:05:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 121 states have (on average 1.322314049586777) internal successors, (160), 144 states have internal predecessors, (160), 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) [2021-10-13 08:05:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2021-10-13 08:05:09,532 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 23 [2021-10-13 08:05:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:09,532 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2021-10-13 08:05:09,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 37 states have internal predecessors, (70), 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) [2021-10-13 08:05:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2021-10-13 08:05:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:05:09,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:09,534 INFO L512 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] [2021-10-13 08:05:09,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:09,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:09,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:10,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:05:10,150 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:05:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:10,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1633911312, now seen corresponding path program 1 times [2021-10-13 08:05:10,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:10,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36693616] [2021-10-13 08:05:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:10,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:10,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:10,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:10,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 08:05:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:10,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:05:10,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:10,599 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 [2021-10-13 08:05:10,720 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 7 [2021-10-13 08:05:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:05:10,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:05:10,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:10,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36693616] [2021-10-13 08:05:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36693616] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:10,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:10,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 08:05:10,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520815803] [2021-10-13 08:05:10,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:05:10,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:05:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:05:10,944 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-10-13 08:05:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:11,336 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-13 08:05:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:05:11,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 28 [2021-10-13 08:05:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:11,338 INFO L225 Difference]: With dead ends: 154 [2021-10-13 08:05:11,339 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 08:05:11,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:05:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 08:05:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 148. [2021-10-13 08:05:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 124 states have (on average 1.314516129032258) internal successors, (163), 147 states have internal predecessors, (163), 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) [2021-10-13 08:05:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 163 transitions. [2021-10-13 08:05:11,344 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 163 transitions. Word has length 28 [2021-10-13 08:05:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:11,345 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 163 transitions. [2021-10-13 08:05:11,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-10-13 08:05:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 163 transitions. [2021-10-13 08:05:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:05:11,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:11,355 INFO L512 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] [2021-10-13 08:05:11,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:11,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:05:11,575 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:05:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:11,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1612916602, now seen corresponding path program 1 times [2021-10-13 08:05:11,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:11,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010836881] [2021-10-13 08:05:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:11,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:11,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:11,578 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:11,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 08:05:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:11,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:05:11,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:05:12,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:05:12,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:05:12,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010836881] [2021-10-13 08:05:12,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010836881] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:12,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:12,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:05:12,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124837711] [2021-10-13 08:05:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:05:12,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:05:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:05:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:05:12,196 INFO L87 Difference]: Start difference. First operand 148 states and 163 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-13 08:05:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:12,311 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2021-10-13 08:05:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:05:12,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-10-13 08:05:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:12,313 INFO L225 Difference]: With dead ends: 149 [2021-10-13 08:05:12,313 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 08:05:12,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:05:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 08:05:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-10-13 08:05:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 125 states have (on average 1.304) internal successors, (163), 148 states have internal predecessors, (163), 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) [2021-10-13 08:05:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2021-10-13 08:05:12,318 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 28 [2021-10-13 08:05:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:12,319 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2021-10-13 08:05:12,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-10-13 08:05:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2021-10-13 08:05:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:05:12,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:12,321 INFO L512 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] [2021-10-13 08:05:12,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-13 08:05:12,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:05:12,536 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:05:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash -556753399, now seen corresponding path program 1 times [2021-10-13 08:05:12,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:05:12,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660214246] [2021-10-13 08:05:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:12,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:05:12,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:05:12,538 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:05:12,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 08:05:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:05:12,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:12,979 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 [2021-10-13 08:05:13,083 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 08:05:13,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-13 08:05:13,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 08:05:13,532 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:05:13,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 32 [2021-10-13 08:05:13,671 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:05:13,692 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 1 case distinctions, treesize of input 55 treesize of output 41 [2021-10-13 08:05:14,136 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 48 treesize of output 36 [2021-10-13 08:05:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:14,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:14,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:14,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 08:05:17,152 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~null~0.base (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset ULTIMATE.start_main_~null~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) v_DerPreprocessor_12)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset)))))) (_ bv1 1)))) is different from false [2021-10-13 08:05:37,542 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 1066 treesize of output 1050 [2021-10-13 08:06:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:04,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:04,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660214246] [2021-10-13 08:06:04,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660214246] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:04,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [75579309] [2021-10-13 08:06:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:04,694 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:04,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:06:04,695 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:06:04,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-13 08:06:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:05,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:06:05,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:05,464 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 08:06:05,465 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 17 treesize of output 22 [2021-10-13 08:06:05,766 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-13 08:06:05,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 55 [2021-10-13 08:06:05,959 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 28 treesize of output 24 [2021-10-13 08:06:06,576 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:06:06,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 52 [2021-10-13 08:06:06,846 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-13 08:06:06,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 70 [2021-10-13 08:06:08,152 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 08:06:08,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 69 [2021-10-13 08:06:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:08,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:08,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:08,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:06:48,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 574 treesize of output 566 [2021-10-13 08:07:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:03,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [75579309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:03,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353308775] [2021-10-13 08:07:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:03,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:03,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:03,491 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:07:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 08:07:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:04,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:07:04,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:04,132 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:07:04,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-13 08:07:04,236 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 16 treesize of output 12 [2021-10-13 08:07:08,575 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:07:08,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-10-13 08:07:08,747 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:07:08,747 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 1 case distinctions, treesize of input 54 treesize of output 40 [2021-10-13 08:07:11,411 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 30 treesize of output 18 [2021-10-13 08:07:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:11,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:11,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:11,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 08:07:13,786 INFO L354 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2021-10-13 08:07:13,786 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 39 treesize of output 38 [2021-10-13 08:08:23,025 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 165 treesize of output 161 [2021-10-13 08:08:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:27,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353308775] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:08:27,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:08:27,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13, 12, 12, 12] total 46 [2021-10-13 08:08:27,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945722011] [2021-10-13 08:08:27,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-13 08:08:27,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:08:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-13 08:08:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1739, Unknown=55, NotChecked=88, Total=2162 [2021-10-13 08:08:27,785 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand has 47 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 47 states have internal predecessors, (113), 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) [2021-10-13 08:09:12,791 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 56 [2021-10-13 08:09:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:22,368 INFO L93 Difference]: Finished difference Result 287 states and 314 transitions. [2021-10-13 08:09:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 08:09:22,369 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 47 states have internal predecessors, (113), 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 30 [2021-10-13 08:09:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:22,372 INFO L225 Difference]: With dead ends: 287 [2021-10-13 08:09:22,372 INFO L226 Difference]: Without dead ends: 287 [2021-10-13 08:09:22,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 114 SyntacticMatches, 15 SemanticMatches, 74 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 218982.7ms TimeCoverageRelationStatistics Valid=924, Invalid=4567, Unknown=63, NotChecked=146, Total=5700 [2021-10-13 08:09:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-13 08:09:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 171. [2021-10-13 08:09:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 170 states have internal predecessors, (190), 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) [2021-10-13 08:09:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 190 transitions. [2021-10-13 08:09:22,380 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 190 transitions. Word has length 30 [2021-10-13 08:09:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:22,380 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 190 transitions. [2021-10-13 08:09:22,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 47 states have internal predecessors, (113), 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) [2021-10-13 08:09:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 190 transitions. [2021-10-13 08:09:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:09:22,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:22,382 INFO L512 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] [2021-10-13 08:09:22,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:22,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-13 08:09:22,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:22,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:22,987 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:09:22,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:22,987 INFO L82 PathProgramCache]: Analyzing trace with hash -556753398, now seen corresponding path program 1 times [2021-10-13 08:09:22,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:22,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701889009] [2021-10-13 08:09:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:22,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:22,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:22,989 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:22,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 08:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:23,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 08:09:23,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:23,575 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 [2021-10-13 08:09:23,652 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:09:23,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-13 08:09:23,666 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 [2021-10-13 08:09:23,730 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 21 treesize of output 17 [2021-10-13 08:09:23,754 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 11 treesize of output 7 [2021-10-13 08:09:24,001 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-13 08:09:24,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2021-10-13 08:09:24,062 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:09:24,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-10-13 08:09:24,165 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:09:24,165 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 1 case distinctions, treesize of input 87 treesize of output 61 [2021-10-13 08:09:24,202 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:09:24,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2021-10-13 08:09:24,510 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 [2021-10-13 08:09:24,516 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 16 [2021-10-13 08:09:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:24,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:25,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:25,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 08:09:25,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:25,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-13 08:09:28,002 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~null~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset ULTIMATE.start_main_~null~0.offset) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) v_DerPreprocessor_16)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((ULTIMATE.start_main_~null~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (ULTIMATE.start_main_~null~0.base (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset ULTIMATE.start_main_~null~0.offset) .cse1 v_DerPreprocessor_16)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset ULTIMATE.start_main_~null~0.base) .cse1 v_DerPreprocessor_15)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset)))))) is different from false [2021-10-13 08:09:43,358 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~null~0.offset (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (ULTIMATE.start_main_~null~0.base (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset)) (.cse1 (bvadd (_ bv4 32) v_subst_2))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (store (select |c_#memory_$Pointer$.offset| .cse0) v_subst_2 ULTIMATE.start_main_~null~0.offset) .cse1 v_DerPreprocessor_16)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) v_subst_2 ULTIMATE.start_main_~null~0.base) .cse1 v_DerPreprocessor_15)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset))))) (forall ((ULTIMATE.start_main_~null~0.offset (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse2 (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_$Pointer$.offset| .cse3 (store (store (select |c_#memory_$Pointer$.offset| .cse3) v_subst_1 ULTIMATE.start_main_~null~0.offset) (bvadd (_ bv4 32) v_subst_1) v_DerPreprocessor_16))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))) is different from false [2021-10-13 08:09:43,410 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 842 treesize of output 810 [2021-10-13 08:09:49,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:49,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:49,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:09:49,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:49,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:49,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:09:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:49,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:09:49,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701889009] [2021-10-13 08:09:49,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701889009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:09:49,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [95653375] [2021-10-13 08:09:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:49,921 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:09:49,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:09:49,924 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:09:49,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-13 08:09:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:50,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 08:09:50,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:50,827 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 [2021-10-13 08:09:51,049 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 [2021-10-13 08:09:51,086 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:09:51,086 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 18 treesize of output 18 [2021-10-13 08:09:51,203 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 21 treesize of output 17 [2021-10-13 08:09:51,229 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 11 treesize of output 7 [2021-10-13 08:09:51,726 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:09:51,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-10-13 08:09:51,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-10-13 08:09:51,945 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:09:51,945 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 1 case distinctions, treesize of input 98 treesize of output 68 [2021-10-13 08:09:51,986 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-10-13 08:09:51,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 42 [2021-10-13 08:09:52,626 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 50 treesize of output 34 [2021-10-13 08:09:52,634 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 08:09:52,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 19 [2021-10-13 08:09:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:52,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:52,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:52,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 08:09:52,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:52,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-13 08:10:43,525 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_subst_4 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_$Pointer$.offset| .cse1 (store (store (select |c_#memory_$Pointer$.offset| .cse1) v_subst_4 c_ULTIMATE.start_main_~null~0.offset) (bvadd (_ bv4 32) v_subst_4) v_DerPreprocessor_16))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_subst_3 (_ BitVec 32)) (ULTIMATE.start_main_~null~0.base (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset)) (.cse3 (bvadd (_ bv4 32) v_subst_3))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 (store (store (select |c_#memory_$Pointer$.offset| .cse2) v_subst_3 c_ULTIMATE.start_main_~null~0.offset) .cse3 v_DerPreprocessor_16)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 (store (store (select |c_#memory_$Pointer$.base| .cse2) v_subst_3 ULTIMATE.start_main_~null~0.base) .cse3 v_DerPreprocessor_15)) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset)))))) is different from false [2021-10-13 08:10:43,591 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 1730 treesize of output 1666 [2021-10-13 08:10:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:47,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:47,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:10:47,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:47,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:47,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:10:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:47,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [95653375] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:47,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275062277] [2021-10-13 08:10:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:47,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:47,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:47,870 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:10:47,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 08:10:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:48,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 08:10:48,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:48,848 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 [2021-10-13 08:10:48,886 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:10:48,887 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 15 treesize of output 15 [2021-10-13 08:10:48,927 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 11 treesize of output 7 [2021-10-13 08:10:48,944 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 21 treesize of output 17 [2021-10-13 08:10:49,089 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:10:49,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-10-13 08:10:49,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-10-13 08:10:49,221 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:10:49,222 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 1 case distinctions, treesize of input 87 treesize of output 61 [2021-10-13 08:10:49,258 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:10:49,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2021-10-13 08:10:49,470 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 [2021-10-13 08:10:49,474 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 16 [2021-10-13 08:10:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:49,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:49,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:49,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 08:10:49,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:49,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-13 08:11:07,490 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 206 treesize of output 198 [2021-10-13 08:11:08,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:08,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:08,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:11:08,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:08,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:11:08,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:11:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:08,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275062277] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:08,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:11:08,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13, 12, 11, 12] total 35 [2021-10-13 08:11:08,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211974085] [2021-10-13 08:11:08,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-13 08:11:08,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-13 08:11:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=914, Unknown=18, NotChecked=192, Total=1260 [2021-10-13 08:11:08,208 INFO L87 Difference]: Start difference. First operand 171 states and 190 transitions. Second operand has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 36 states have internal predecessors, (89), 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) [2021-10-13 08:12:01,507 WARN L207 SmtUtils]: Spent 19.35 s on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-10-13 08:12:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:05,942 INFO L93 Difference]: Finished difference Result 239 states and 265 transitions. [2021-10-13 08:12:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 08:12:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 36 states have internal predecessors, (89), 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 30 [2021-10-13 08:12:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:05,944 INFO L225 Difference]: With dead ends: 239 [2021-10-13 08:12:05,944 INFO L226 Difference]: Without dead ends: 239 [2021-10-13 08:12:05,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 131 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 128505.9ms TimeCoverageRelationStatistics Valid=518, Invalid=2553, Unknown=21, NotChecked=330, Total=3422 [2021-10-13 08:12:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-13 08:12:05,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 183. [2021-10-13 08:12:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 159 states have (on average 1.2830188679245282) internal successors, (204), 182 states have internal predecessors, (204), 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) [2021-10-13 08:12:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2021-10-13 08:12:05,950 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 30 [2021-10-13 08:12:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:05,951 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2021-10-13 08:12:05,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 36 states have internal predecessors, (89), 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) [2021-10-13 08:12:05,951 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2021-10-13 08:12:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:12:05,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:05,952 INFO L512 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] [2021-10-13 08:12:05,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:06,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:06,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:06,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:06,564 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:12:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:06,565 INFO L82 PathProgramCache]: Analyzing trace with hash -598771652, now seen corresponding path program 1 times [2021-10-13 08:12:06,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:06,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123943941] [2021-10-13 08:12:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:06,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:06,566 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:06,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 08:12:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:07,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:12:07,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:07,197 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 7 [2021-10-13 08:12:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:12:07,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:07,322 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 21 treesize of output 9 [2021-10-13 08:12:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:12:07,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:07,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123943941] [2021-10-13 08:12:07,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123943941] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:07,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:07,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 08:12:07,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289860941] [2021-10-13 08:12:07,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:12:07,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:07,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:12:07,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:12:07,353 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-10-13 08:12:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:07,734 INFO L93 Difference]: Finished difference Result 187 states and 206 transitions. [2021-10-13 08:12:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:12:07,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 30 [2021-10-13 08:12:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:07,735 INFO L225 Difference]: With dead ends: 187 [2021-10-13 08:12:07,736 INFO L226 Difference]: Without dead ends: 187 [2021-10-13 08:12:07,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:12:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-13 08:12:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2021-10-13 08:12:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.2670807453416149) internal successors, (204), 184 states have internal predecessors, (204), 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) [2021-10-13 08:12:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 204 transitions. [2021-10-13 08:12:07,739 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 204 transitions. Word has length 30 [2021-10-13 08:12:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:07,740 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 204 transitions. [2021-10-13 08:12:07,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-10-13 08:12:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 204 transitions. [2021-10-13 08:12:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:12:07,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:07,741 INFO L512 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] [2021-10-13 08:12:07,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:07,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:07,963 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-10-13 08:12:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:07,963 INFO L82 PathProgramCache]: Analyzing trace with hash 51447198, now seen corresponding path program 1 times [2021-10-13 08:12:07,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:07,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186931991] [2021-10-13 08:12:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:07,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:07,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:07,965 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:07,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 08:12:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:08,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 08:12:08,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:08,650 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 [2021-10-13 08:12:08,684 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 [2021-10-13 08:12:08,804 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:12:08,804 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 15 treesize of output 15 [2021-10-13 08:12:08,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:12:08,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:12:08,893 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 16 treesize of output 12 [2021-10-13 08:12:09,013 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 16 treesize of output 8 [2021-10-13 08:12:09,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:12:09,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:12:09,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:12:09,422 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-13 08:12:09,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-10-13 08:12:09,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:12:09,568 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 35 treesize of output 31 [2021-10-13 08:12:09,572 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 28 treesize of output 20 [2021-10-13 08:12:09,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:12:09,822 INFO L354 Elim1Store]: treesize reduction 41, result has 31.7 percent of original size [2021-10-13 08:12:09,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 39 [2021-10-13 08:12:09,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:12:10,019 INFO L354 Elim1Store]: treesize reduction 56, result has 32.5 percent of original size [2021-10-13 08:12:10,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 48 [2021-10-13 08:12:10,967 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-10-13 08:12:10,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-10-13 08:12:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:11,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:11,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:12:11,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:12:11,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:12:11,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 08:12:13,709 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_22)))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) |c_ULTIMATE.start_main_#t~malloc9.offset| v_DerPreprocessor_21) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~malloc9.offset|) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:15,731 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_22)))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:17,756 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_22)))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:17,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:12:17,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 08:12:19,796 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_23) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_22)))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:21,817 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7.base|) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_23) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_22)))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:23,840 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.offset_131 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_int| .cse1 (store (store (store (select |c_#memory_int| .cse1) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_23) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_131) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_22))))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:23,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:12:23,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-13 08:12:25,882 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.offset_131 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_24)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc6.base| (store (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc6.base|) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_23) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_131) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_22))))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:27,941 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc6.base_33| (_ BitVec 32))) (or (forall ((v_ULTIMATE.start_main_~end~0.offset_131 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_24)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_33| (store (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_33|) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_23) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_131) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_22))))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_33|))))))) is different from false [2021-10-13 08:12:30,009 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~end~0.offset_131 (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc9.base| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc6.base_33| (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_24)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_33| (store (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_33|) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_23) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_131) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_131 v_DerPreprocessor_22))))) (store .cse0 |ULTIMATE.start_main_#t~malloc9.base| (store (store (select .cse0 |ULTIMATE.start_main_#t~malloc9.base|) (_ bv0 32) v_DerPreprocessor_21) (_ bv4 32) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_33|))))))) is different from false [2021-10-13 08:12:32,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:32,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186931991] [2021-10-13 08:12:32,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:12:32,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [974973623] [2021-10-13 08:12:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:32,535 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:32,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:12:32,535 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:12:32,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-10-13 08:12:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:33,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 08:12:33,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:33,400 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 [2021-10-13 08:12:33,436 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 [2021-10-13 08:12:33,489 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:12:33,490 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 15 treesize of output 15 [2021-10-13 08:12:33,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:12:33,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:12:33,548 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 16 treesize of output 12 [2021-10-13 08:12:33,599 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 16 treesize of output 8 [2021-10-13 08:12:33,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:12:33,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:12:34,025 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:12:34,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-13 08:12:34,172 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-13 08:12:34,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-10-13 08:12:34,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:12:34,338 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 29 treesize of output 21 [2021-10-13 08:12:36,575 INFO L354 Elim1Store]: treesize reduction 41, result has 31.7 percent of original size [2021-10-13 08:12:36,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 39 [2021-10-13 08:12:36,645 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:12:36,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:12:37,110 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:12:37,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 14 [2021-10-13 08:12:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:37,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:37,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:12:37,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:12:39,171 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_25) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~BLACK)) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:51,519 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_int| .cse0 (store (store (select |c_#memory_int| .cse0) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:12:51,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:12:51,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 08:13:02,559 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_26)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_15|))))) is different from false [2021-10-13 08:13:04,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_26)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_15|))))) is different from false [2021-10-13 08:13:04,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:04,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 08:13:06,719 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_15|))) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_27) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_26)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)) ~unnamed1~0~BLACK))) is different from false [2021-10-13 08:13:08,762 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_15|))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7.base|) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_27) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_26)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))))) is different from false [2021-10-13 08:13:08,799 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:13:08,799 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 87 treesize of output 86 [2021-10-13 08:13:10,837 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_139 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (= |v_ULTIMATE.start_main_#t~malloc9.base_15| c_ULTIMATE.start_main_~end~0.base) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_int| .cse1 (store (store (store (select |c_#memory_int| .cse1) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_27) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_139) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))))) is different from false [2021-10-13 08:13:10,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:10,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-13 08:13:12,950 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_139 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_28)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc6.base| (store (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc6.base|) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_27) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_139) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= |v_ULTIMATE.start_main_#t~malloc9.base_15| c_ULTIMATE.start_main_~end~0.base))) is different from false [2021-10-13 08:13:15,294 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc6.base_35| (_ BitVec 32))) (or (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_139 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_28)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_35| (store (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_35|) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_27) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_139) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= |v_ULTIMATE.start_main_#t~malloc9.base_15| c_ULTIMATE.start_main_~end~0.base))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_35|)))))) is different from false [2021-10-13 08:13:17,464 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc6.base_35| (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_139 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_15| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_28)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_35| (store (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_35|) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_27) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_139) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_139 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_15|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= |v_ULTIMATE.start_main_#t~malloc9.base_15| c_ULTIMATE.start_main_~list~0.base) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_35|)))))) is different from false [2021-10-13 08:13:28,590 WARN L207 SmtUtils]: Spent 11.11 s on a formula simplification. DAG size of input: 494 DAG size of output: 313 [2021-10-13 08:13:28,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:13:28,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757315232] [2021-10-13 08:13:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:28,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:13:28,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:13:28,594 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:13:28,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 08:13:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:29,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 08:13:29,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:13:31,408 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 [2021-10-13 08:13:31,470 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:13:31,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-13 08:13:31,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:13:31,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:13:31,514 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 16 treesize of output 12 [2021-10-13 08:13:31,708 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 16 treesize of output 8 [2021-10-13 08:13:31,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:13:31,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:13:31,879 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:13:31,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-13 08:13:31,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:13:31,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:13:31,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-10-13 08:13:31,978 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 29 treesize of output 21 [2021-10-13 08:13:32,170 INFO L354 Elim1Store]: treesize reduction 41, result has 31.7 percent of original size [2021-10-13 08:13:32,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 39 [2021-10-13 08:13:32,261 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:13:32,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:13:32,569 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:13:32,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 14 [2021-10-13 08:13:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:32,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:32,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:32,620 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:13:34,628 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_29) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~BLACK)) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:13:37,032 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_145 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_int| .cse0 (store (store (select |c_#memory_int| .cse0) v_ULTIMATE.start_main_~end~0.offset_145 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_145) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset)))) is different from false [2021-10-13 08:13:37,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:37,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-13 08:14:22,152 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_25 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_17| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_26)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_17|)))))) is different from false [2021-10-13 08:14:22,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:14:22,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 08:14:24,249 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_17| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_31) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_26)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_17|)))))) is different from false [2021-10-13 08:14:26,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (ULTIMATE.start_main_~end~0.offset (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_17| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_17|)))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7.base|) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_31) (bvadd (_ bv4 32) ULTIMATE.start_main_~end~0.offset) ~unnamed1~0~RED) ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_26)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))))) is different from false [2021-10-13 08:14:28,354 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_147 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_17| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc9.base_17|)))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset))) (store |c_#memory_int| .cse1 (store (store (store (select |c_#memory_int| .cse1) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_31) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_147) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))))) is different from false [2021-10-13 08:14:28,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:14:28,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-10-13 08:14:28,468 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:14:28,468 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 104 treesize of output 103 [2021-10-13 08:14:30,533 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_147 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_17| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_32)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc6.base| (store (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc6.base|) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_31) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_147) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= |v_ULTIMATE.start_main_#t~malloc9.base_17| c_ULTIMATE.start_main_~end~0.base))) is different from false [2021-10-13 08:14:32,751 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc6.base_37| (_ BitVec 32))) (or (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_147 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_17| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~end~0.base) c_ULTIMATE.start_main_~end~0.offset v_DerPreprocessor_32)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_37| (store (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_37|) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_31) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_147) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= |v_ULTIMATE.start_main_#t~malloc9.base_17| c_ULTIMATE.start_main_~end~0.base))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_37|))))))) is different from false [2021-10-13 08:14:35,038 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc6.base_37| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_147 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc9.base_17| (_ BitVec 32)) (v_ULTIMATE.start_main_~end~0.offset_137 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~list~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_32)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_37| (store (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc6.base_37|) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_31) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_147) ~unnamed1~0~RED) v_ULTIMATE.start_main_~end~0.offset_147 v_DerPreprocessor_26))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc9.base_17|) v_ULTIMATE.start_main_~end~0.offset_137 v_DerPreprocessor_25) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~end~0.offset_137) ~unnamed1~0~BLACK))) c_ULTIMATE.start_main_~list~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (= |v_ULTIMATE.start_main_#t~malloc9.base_17| c_ULTIMATE.start_main_~list~0.base) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc6.base_37|))))))) is different from false [2021-10-13 08:14:40,551 WARN L207 SmtUtils]: Spent 5.49 s on a formula simplification. DAG size of input: 463 DAG size of output: 459 [2021-10-13 08:14:40,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:14:40,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:40,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 08:14:40,553 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 08:14:40,554 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 08:14:40,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:14:40,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 08:14:40,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 08:14:40,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 08:14:40,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 08:14:40,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 08:14:40,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 08:14:40,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-13 08:14:40,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-13 08:14:40,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-13 08:14:40,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-13 08:14:40,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-13 08:14:40,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:14:40,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-13 08:14:40,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-13 08:14:40,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-13 08:14:40,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-13 08:14:40,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-13 08:14:40,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-13 08:14:40,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:14:40,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-13 08:14:40,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-13 08:14:40,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:14:40,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-13 08:14:40,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-13 08:14:40,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-13 08:14:40,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-13 08:14:40,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-13 08:14:40,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-13 08:14:40,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-13 08:14:40,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-13 08:14:40,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION [2021-10-13 08:14:40,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-13 08:14:40,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:14:40,570 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:14:40,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:40,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-13 08:14:40,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:41,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:14:41,179 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:14:41,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:14:41 BoogieIcfgContainer [2021-10-13 08:14:41,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:14:41,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:14:41,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:14:41,201 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:14:41,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:02:10" (3/4) ... [2021-10-13 08:14:41,208 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 08:14:41,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:14:41,209 INFO L168 Benchmark]: Toolchain (without parser) took 752290.29 ms. Allocated memory was 73.4 MB in the beginning and 549.5 MB in the end (delta: 476.1 MB). Free memory was 53.5 MB in the beginning and 228.7 MB in the end (delta: -175.2 MB). Peak memory consumption was 299.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:41,212 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:14:41,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.48 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 48.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:41,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.95 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 46.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:41,213 INFO L168 Benchmark]: Boogie Preprocessor took 86.76 ms. Allocated memory is still 73.4 MB. Free memory was 46.3 MB in the beginning and 44.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:41,214 INFO L168 Benchmark]: RCFGBuilder took 1018.12 ms. Allocated memory is still 73.4 MB. Free memory was 44.4 MB in the beginning and 46.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:41,215 INFO L168 Benchmark]: TraceAbstraction took 750489.87 ms. Allocated memory was 73.4 MB in the beginning and 549.5 MB in the end (delta: 476.1 MB). Free memory was 46.0 MB in the beginning and 228.7 MB in the end (delta: -182.7 MB). Peak memory consumption was 359.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:41,215 INFO L168 Benchmark]: Witness Printer took 7.63 ms. Allocated memory is still 549.5 MB. Free memory is still 228.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:14:41,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 608.48 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 48.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.95 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 46.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.76 ms. Allocated memory is still 73.4 MB. Free memory was 46.3 MB in the beginning and 44.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1018.12 ms. Allocated memory is still 73.4 MB. Free memory was 44.4 MB in the beginning and 46.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 750489.87 ms. Allocated memory was 73.4 MB in the beginning and 549.5 MB in the end (delta: 476.1 MB). Free memory was 46.0 MB in the beginning and 228.7 MB in the end (delta: -182.7 MB). Peak memory consumption was 359.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.63 ms. Allocated memory is still 549.5 MB. Free memory is still 228.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1042]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1005] SLL* null = malloc(sizeof(SLL)); [L1006] null->colour = BLACK [L1007] null->next = ((void*)0) [L1009] SLL* list = malloc(sizeof(SLL)); [L1010] list->next = null [L1011] list->colour = BLACK [L1013] SLL* end = list; [L1016] COND TRUE __VERIFIER_nondet_int() [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1029] end->colour = RED [L1030] end->next = malloc(sizeof(SLL)) [L1031] EXPR end->next [L1031] end = end->next [L1032] end->next = null [L1033] end->colour = BLACK [L1016] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list [L1041] COND FALSE !(!(null != end)) [L1042] EXPR end->colour [L1042] COND TRUE !(BLACK == end->colour) [L1042] reach_error() - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1069]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1069]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1069]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 61 error locations. Started 1 CEGAR loops. OverallTime: 750376.3ms, OverallIterations: 21, TraceHistogramMax: 2, EmptinessCheckTime: 62.7ms, AutomataDifference: 199339.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1457 SDtfs, 4220 SDslu, 4714 SDs, 0 SdLazy, 8195 SolverSat, 701 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 56984.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1191 GetRequests, 820 SyntacticMatches, 44 SemanticMatches, 327 ConstructedPredicates, 12 IntricatePredicates, 1 DeprecatedPredicates, 4606 ImplicationChecksByTransitivity, 484362.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=20, InterpolantAutomatonStates: 220, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 168.4ms AutomataMinimizationTime, 20 MinimizatonAttempts, 702 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 299.8ms SsaConstructionTime, 1849.8ms SatisfiabilityAnalysisTime, 382602.6ms InterpolantComputationTime, 560 NumberOfCodeBlocks, 560 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1064 ConstructedInterpolants, 160 QuantifiedInterpolants, 15809 SizeOfPredicates, 216 NumberOfNonLiveVariables, 2641 ConjunctsInSsa, 276 ConjunctsInUnsatCore, 56 InterpolantComputations, 32 PerfectInterpolantSequences, 10/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 08:14:41,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46cf9ee3-80a8-4215-b0dd-a773d06b4a54/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...