./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:30,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:30,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:30,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:30,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:30,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:30,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:30,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:30,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:30,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:30,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:30,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:30,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:30,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:30,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:30,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:30,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:30,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:30,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:30,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:30,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:30,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:30,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:30,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:30,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:30,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:30,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:30,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:30,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:30,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:30,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:30,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:30,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:30,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:30,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:30,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:30,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:30,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:30,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:30,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:30,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:30,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-20 23:35:30,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:30,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:30,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:30,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:30,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:30,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:30,292 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:30,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:30,293 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:30,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:30,294 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:30,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:30,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:30,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:30,295 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:30,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:30,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:30,295 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:30,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:35:30,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:35:30,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:30,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:35:30,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:35:30,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:30,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:35:30,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:30,299 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:35:30,299 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:35:30,299 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:35:30,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:30,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:35:30,300 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:35:30,300 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:30,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:30,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:30,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:30,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:30,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:30,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:30,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:30,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:30,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:30,302 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_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 [2021-11-20 23:35:30,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:30,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:30,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:30,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:30,597 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:30,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-11-20 23:35:30,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/084a71a84/4077bdbdb81e425a8659979fafff1783/FLAGbc13c9462 [2021-11-20 23:35:31,230 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:31,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-11-20 23:35:31,253 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/084a71a84/4077bdbdb81e425a8659979fafff1783/FLAGbc13c9462 [2021-11-20 23:35:31,513 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/084a71a84/4077bdbdb81e425a8659979fafff1783 [2021-11-20 23:35:31,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:31,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:31,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:31,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:31,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:31,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:31" (1/1) ... [2021-11-20 23:35:31,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c19840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:31, skipping insertion in model container [2021-11-20 23:35:31,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:31" (1/1) ... [2021-11-20 23:35:31,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:31,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:31,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:31,939 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 23:35:31,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11b848ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:31, skipping insertion in model container [2021-11-20 23:35:31,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:31,940 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 23:35:31,943 INFO L158 Benchmark]: Toolchain (without parser) took 423.86ms. Allocated memory is still 146.8MB. Free memory was 108.6MB in the beginning and 120.1MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:35:31,944 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 146.8MB. Free memory was 118.8MB in the beginning and 118.8MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:35:31,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.30ms. Allocated memory is still 146.8MB. Free memory was 108.6MB in the beginning and 120.1MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:35:31,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 146.8MB. Free memory was 118.8MB in the beginning and 118.8MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.30ms. Allocated memory is still 146.8MB. Free memory was 108.6MB in the beginning and 120.1MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:34,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:34,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:34,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:34,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:34,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:34,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:34,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:34,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:34,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:34,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:34,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:34,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:34,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:34,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:34,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:34,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:34,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:34,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:34,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:34,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:34,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:34,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:34,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:34,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:34,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:34,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:34,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:34,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:34,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:34,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:34,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:34,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:34,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:34,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:34,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:34,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:34,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:34,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:34,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:34,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:34,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-20 23:35:34,331 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:34,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:34,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:34,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:34,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:34,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:34,333 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:34,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:34,333 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:34,334 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:34,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:34,335 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:34,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:35:34,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:35:34,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:34,337 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:35:34,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:35:34,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:34,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:35:34,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:34,338 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:35:34,338 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:35:34,338 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:35:34,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:34,339 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:35:34,339 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:35:34,339 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:35:34,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:35:34,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:34,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:34,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:35:34,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:34,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:34,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:34,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:34,341 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:35:34,341 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:35:34,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:34,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:34,342 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_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 [2021-11-20 23:35:34,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:34,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:34,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:34,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:34,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:34,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-11-20 23:35:34,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/7312daa17/f031fe2acd11499da73058569a8bf0b1/FLAGedfa462f9 [2021-11-20 23:35:35,421 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:35,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-11-20 23:35:35,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/7312daa17/f031fe2acd11499da73058569a8bf0b1/FLAGedfa462f9 [2021-11-20 23:35:35,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/data/7312daa17/f031fe2acd11499da73058569a8bf0b1 [2021-11-20 23:35:35,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:35,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:35,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:35,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:35,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:35,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:35" (1/1) ... [2021-11-20 23:35:35,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d14adcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:35, skipping insertion in model container [2021-11-20 23:35:35,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:35" (1/1) ... [2021-11-20 23:35:35,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:35,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:36,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:36,203 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 23:35:36,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:36,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:36,271 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:36,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:36,368 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:36,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36 WrapperNode [2021-11-20 23:35:36,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:36,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:36,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:36,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:36,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,437 INFO L137 Inliner]: procedures = 115, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2021-11-20 23:35:36,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:36,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:36,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:36,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:36,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:36,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:36,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:36,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:36,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (1/1) ... [2021-11-20 23:35:36,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:36,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:36,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-11-20 23:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-11-20 23:35:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:36,695 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:36,697 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:36,976 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:35:36,984 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:35:36,984 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:35:36,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:36 BoogieIcfgContainer [2021-11-20 23:35:36,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:35:36,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:35:36,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:35:36,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:35:36,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:35" (1/3) ... [2021-11-20 23:35:36,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521a722b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:36, skipping insertion in model container [2021-11-20 23:35:36,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:36" (2/3) ... [2021-11-20 23:35:36,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521a722b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:36, skipping insertion in model container [2021-11-20 23:35:36,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:36" (3/3) ... [2021-11-20 23:35:36,994 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2021-11-20 23:35:37,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:35:37,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-20 23:35:37,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:35:37,050 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:35:37,050 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-20 23:35:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 38 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:35:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:35:37,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:37,076 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:37,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:35:37,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash -900798970, now seen corresponding path program 1 times [2021-11-20 23:35:37,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:35:37,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738420493] [2021-11-20 23:35:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:37,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:35:37,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:35:37,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:35:37,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:35:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:35:37,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:35:37,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:35:37,597 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:35:37,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-20 23:35:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:37,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:35:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:38,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:35:38,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738420493] [2021-11-20 23:35:38,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738420493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:35:38,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [713615137] [2021-11-20 23:35:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:38,041 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:35:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:35:38,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:35:38,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2021-11-20 23:35:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:38,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:35:38,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:35:38,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:35:38,336 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 23:35:38,337 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 24 treesize of output 31 [2021-11-20 23:35:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:38,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:22,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [713615137] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:36:22,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435666451] [2021-11-20 23:36:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:22,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:36:22,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:36:22,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:36:22,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:36:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:22,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:36:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:22,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:22,478 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 23:36:22,479 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 [2021-11-20 23:36:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:22,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:36:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:53,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435666451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:36:53,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:36:53,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8, 8, 8, 8] total 16 [2021-11-20 23:36:53,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882144771] [2021-11-20 23:36:53,181 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:36:53,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:36:53,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:36:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:36:53,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=213, Unknown=11, NotChecked=0, Total=272 [2021-11-20 23:36:53,219 INFO L87 Difference]: Start difference. First operand has 42 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 38 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 23:36:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:53,555 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-11-20 23:36:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:36:53,557 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 16 [2021-11-20 23:36:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:53,564 INFO L225 Difference]: With dead ends: 44 [2021-11-20 23:36:53,564 INFO L226 Difference]: Without dead ends: 40 [2021-11-20 23:36:53,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 13 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 73.8s TimeCoverageRelationStatistics Valid=76, Invalid=293, Unknown=11, NotChecked=0, Total=380 [2021-11-20 23:36:53,570 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:53,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 178 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 149 Unchecked, 0.2s Time] [2021-11-20 23:36:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-20 23:36:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-20 23:36:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.4) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:36:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 39 transitions. [2021-11-20 23:36:53,613 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 39 transitions. Word has length 16 [2021-11-20 23:36:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:53,614 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 39 transitions. [2021-11-20 23:36:53,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 23:36:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2021-11-20 23:36:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:36:53,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:53,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:53,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:53,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:54,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:54,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:36:54,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:36:54,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:54,233 INFO L85 PathProgramCache]: Analyzing trace with hash -900798969, now seen corresponding path program 1 times [2021-11-20 23:36:54,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:36:54,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015606543] [2021-11-20 23:36:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:54,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:36:54,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:36:54,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:36:54,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:36:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:54,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:36:54,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:54,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:54,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:36:54,692 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:36:54,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-20 23:36:54,711 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:36:54,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-20 23:36:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:54,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:27,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:37:27,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015606543] [2021-11-20 23:37:27,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015606543] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:27,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [960605490] [2021-11-20 23:37:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:27,973 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:37:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:37:27,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:37:28,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-20 23:37:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:28,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:37:28,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:28,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:28,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:28,373 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:37:28,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-20 23:37:28,394 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:37:28,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-20 23:37:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:28,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:33,162 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_4| (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_4|))) (and (bvule .cse0 (select |c_#length| |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_10|)) (bvule |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_4| .cse0))) (exists ((|v_alloc_node_~temp~0#1.base_31| (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_4|))) (or (not (bvule .cse1 (select (store |c_old(#length)| |v_alloc_node_~temp~0#1.base_31| (_ bv4 32)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_10|))) (not (bvule |v_ULTIMATE.start_main_~s~0#1.offset_BEFORE_CALL_4| .cse1)))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_alloc_node_~temp~0#1.base_31|))))))) is different from true [2021-11-20 23:37:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-20 23:37:46,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [960605490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:46,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383036948] [2021-11-20 23:37:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:46,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:37:46,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:37:46,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:37:46,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:37:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:46,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:37:46,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:46,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:46,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:37:46,321 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:37:46,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-20 23:37:46,338 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:37:46,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-20 23:37:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:46,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:21,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383036948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:21,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:38:21,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2021-11-20 23:38:21,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078092217] [2021-11-20 23:38:21,076 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:38:21,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:38:21,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:21,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:38:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=268, Unknown=29, NotChecked=34, Total=380 [2021-11-20 23:38:21,079 INFO L87 Difference]: Start difference. First operand 40 states and 39 transitions. Second operand has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 23:38:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:23,704 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2021-11-20 23:38:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:38:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 16 [2021-11-20 23:38:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:23,706 INFO L225 Difference]: With dead ends: 37 [2021-11-20 23:38:23,706 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 23:38:23,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 79.5s TimeCoverageRelationStatistics Valid=63, Invalid=332, Unknown=29, NotChecked=38, Total=462 [2021-11-20 23:38:23,708 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:23,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 141 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 206 Unchecked, 0.2s Time] [2021-11-20 23:38:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 23:38:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-20 23:38:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.28) internal successors, (32), 32 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2021-11-20 23:38:23,715 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 16 [2021-11-20 23:38:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:23,715 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2021-11-20 23:38:23,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 12 states have internal predecessors, (30), 3 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 23:38:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2021-11-20 23:38:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:38:23,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:23,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:23,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:23,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-20 23:38:24,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-20 23:38:24,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:38:24,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1915582951, now seen corresponding path program 1 times [2021-11-20 23:38:24,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:24,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248672286] [2021-11-20 23:38:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:24,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:24,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:24,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:24,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:38:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:24,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:38:24,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 23:38:24,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 23:38:24,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:24,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248672286] [2021-11-20 23:38:24,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248672286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:24,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:24,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:38:24,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065787659] [2021-11-20 23:38:24,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:24,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:24,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:24,442 INFO L87 Difference]: Start difference. First operand 37 states and 36 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:38:24,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:24,488 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2021-11-20 23:38:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:24,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 23:38:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:24,491 INFO L225 Difference]: With dead ends: 36 [2021-11-20 23:38:24,491 INFO L226 Difference]: Without dead ends: 36 [2021-11-20 23:38:24,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:24,493 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:24,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-20 23:38:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-20 23:38:24,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.24) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 35 transitions. [2021-11-20 23:38:24,501 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 35 transitions. Word has length 18 [2021-11-20 23:38:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:24,501 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 35 transitions. [2021-11-20 23:38:24,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:38:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2021-11-20 23:38:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:38:24,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:24,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:24,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:24,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:24,711 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1915582952, now seen corresponding path program 1 times [2021-11-20 23:38:24,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:24,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633557306] [2021-11-20 23:38:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:24,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:24,719 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:24,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:38:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:24,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:38:24,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:24,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:25,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 23:38:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:25,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:25,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633557306] [2021-11-20 23:38:25,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633557306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:25,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [770765834] [2021-11-20 23:38:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:25,357 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:38:25,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:38:25,360 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:38:25,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-20 23:38:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:25,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:38:25,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 23:38:25,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 23:38:25,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [770765834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:25,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:38:25,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [6, 6] total 11 [2021-11-20 23:38:25,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505504327] [2021-11-20 23:38:25,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:25,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:25,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:38:25,569 INFO L87 Difference]: Start difference. First operand 36 states and 35 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:38:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:25,624 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2021-11-20 23:38:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:25,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 23:38:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:25,627 INFO L225 Difference]: With dead ends: 35 [2021-11-20 23:38:25,627 INFO L226 Difference]: Without dead ends: 35 [2021-11-20 23:38:25,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:38:25,630 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:25,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:38:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-20 23:38:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-20 23:38:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.2) internal successors, (30), 30 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2021-11-20 23:38:25,638 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 18 [2021-11-20 23:38:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:25,639 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2021-11-20 23:38:25,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:38:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2021-11-20 23:38:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 23:38:25,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:25,640 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:25,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:25,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:26,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:38:26,043 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:26,044 INFO L85 PathProgramCache]: Analyzing trace with hash -443580503, now seen corresponding path program 1 times [2021-11-20 23:38:26,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:26,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857168356] [2021-11-20 23:38:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:26,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:26,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:26,046 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:26,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:38:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:26,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:38:26,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:26,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:26,331 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:26,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857168356] [2021-11-20 23:38:26,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857168356] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:26,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213336165] [2021-11-20 23:38:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:26,332 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:38:26,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:38:26,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:38:26,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-20 23:38:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:26,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:38:26,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:26,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:26,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213336165] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:26,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843849905] [2021-11-20 23:38:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:26,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:26,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:26,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:38:26,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 23:38:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:26,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:38:26,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:26,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:26,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843849905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:26,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:38:26,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 5 [2021-11-20 23:38:26,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633436429] [2021-11-20 23:38:26,931 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:38:26,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:38:26,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:38:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:38:26,933 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:27,030 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2021-11-20 23:38:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:38:27,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-11-20 23:38:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:27,032 INFO L225 Difference]: With dead ends: 34 [2021-11-20 23:38:27,032 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 23:38:27,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:27,033 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:27,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 85 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:38:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 23:38:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 23:38:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.16) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2021-11-20 23:38:27,039 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 23 [2021-11-20 23:38:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:27,040 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2021-11-20 23:38:27,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2021-11-20 23:38:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 23:38:27,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:27,041 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:27,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:27,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-20 23:38:27,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:27,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:27,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash -866093651, now seen corresponding path program 1 times [2021-11-20 23:38:27,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:27,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546904869] [2021-11-20 23:38:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:27,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:27,657 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:27,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 23:38:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:27,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:38:27,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:28,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:28,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:28,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546904869] [2021-11-20 23:38:28,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546904869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [893638047] [2021-11-20 23:38:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:28,446 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:38:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:38:28,447 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:38:28,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-20 23:38:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:28,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:38:28,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:28,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:28,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [893638047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755404464] [2021-11-20 23:38:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:28,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:28,784 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:38:28,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 23:38:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:28,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:38:28,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:28,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:29,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755404464] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:29,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:38:29,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 5, 6, 5] total 11 [2021-11-20 23:38:29,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454830550] [2021-11-20 23:38:29,097 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:38:29,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:38:29,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:38:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:38:29,099 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 23:38:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:29,395 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-11-20 23:38:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:38:29,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 24 [2021-11-20 23:38:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:29,401 INFO L225 Difference]: With dead ends: 33 [2021-11-20 23:38:29,401 INFO L226 Difference]: Without dead ends: 33 [2021-11-20 23:38:29,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:29,402 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:29,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 56 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 7 Unchecked, 0.3s Time] [2021-11-20 23:38:29,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-20 23:38:29,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-20 23:38:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2021-11-20 23:38:29,408 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 24 [2021-11-20 23:38:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:29,409 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2021-11-20 23:38:29,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 23:38:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2021-11-20 23:38:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 23:38:29,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:29,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:29,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:29,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:29,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:30,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:38:30,035 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:30,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 907658607, now seen corresponding path program 1 times [2021-11-20 23:38:30,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:30,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88937265] [2021-11-20 23:38:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:30,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:30,037 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:30,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 23:38:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:30,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:38:30,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:30,160 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 [2021-11-20 23:38:30,233 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 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:38:30,251 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 [2021-11-20 23:38:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:30,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:30,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:30,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88937265] [2021-11-20 23:38:30,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88937265] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:30,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:30,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-11-20 23:38:30,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108869961] [2021-11-20 23:38:30,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:30,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:38:30,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:30,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:38:30,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:38:30,464 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:38:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:30,719 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2021-11-20 23:38:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:38:30,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-20 23:38:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:30,720 INFO L225 Difference]: With dead ends: 32 [2021-11-20 23:38:30,720 INFO L226 Difference]: Without dead ends: 32 [2021-11-20 23:38:30,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:38:30,723 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:30,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 110 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:38:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-20 23:38:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-20 23:38:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-11-20 23:38:30,729 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 26 [2021-11-20 23:38:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:30,729 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-11-20 23:38:30,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:38:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-11-20 23:38:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:38:30,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:30,731 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:30,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:30,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:30,932 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1927354195, now seen corresponding path program 1 times [2021-11-20 23:38:30,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:30,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635810092] [2021-11-20 23:38:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:30,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:30,934 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:30,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 23:38:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:30,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:38:30,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:31,451 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 15 treesize of output 11 [2021-11-20 23:38:31,665 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 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:38:31,726 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 [2021-11-20 23:38:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:32,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:32,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:32,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635810092] [2021-11-20 23:38:32,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635810092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:32,604 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:32,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 17 [2021-11-20 23:38:32,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629987494] [2021-11-20 23:38:32,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:32,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:38:32,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:32,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:38:32,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:38:32,605 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 23:38:32,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:32,672 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2021-11-20 23:38:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:38:32,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2021-11-20 23:38:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:32,676 INFO L225 Difference]: With dead ends: 31 [2021-11-20 23:38:32,676 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 23:38:32,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:38:32,677 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:32,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 72 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2021-11-20 23:38:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 23:38:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 23:38:32,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2021-11-20 23:38:32,682 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 27 [2021-11-20 23:38:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:32,682 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2021-11-20 23:38:32,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 23:38:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2021-11-20 23:38:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:38:32,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:32,684 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:32,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:32,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:32,887 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash 381562161, now seen corresponding path program 1 times [2021-11-20 23:38:32,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:32,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237685621] [2021-11-20 23:38:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:32,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:32,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:32,890 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:32,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 23:38:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:32,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 23:38:32,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:33,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:38:33,338 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 23:38:33,338 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 30 treesize of output 37 [2021-11-20 23:38:33,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-20 23:38:33,647 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 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-20 23:38:33,712 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 16 [2021-11-20 23:38:33,959 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-20 23:38:33,959 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 51 treesize of output 54 [2021-11-20 23:38:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:34,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:36,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:38:36,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237685621] [2021-11-20 23:38:36,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237685621] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:36,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:38:36,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 23 [2021-11-20 23:38:36,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775244874] [2021-11-20 23:38:36,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:36,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:38:36,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:38:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:38:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=484, Unknown=1, NotChecked=0, Total=552 [2021-11-20 23:38:36,953 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:37,121 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2021-11-20 23:38:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:38:37,122 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-11-20 23:38:37,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:37,122 INFO L225 Difference]: With dead ends: 30 [2021-11-20 23:38:37,123 INFO L226 Difference]: Without dead ends: 30 [2021-11-20 23:38:37,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=76, Invalid=523, Unknown=1, NotChecked=0, Total=600 [2021-11-20 23:38:37,124 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:37,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2021-11-20 23:38:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-20 23:38:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-20 23:38:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.0) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2021-11-20 23:38:37,129 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 28 [2021-11-20 23:38:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:37,130 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2021-11-20 23:38:37,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:38:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2021-11-20 23:38:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 23:38:37,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:37,131 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:37,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:37,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:38:37,332 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 23:38:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1056474832, now seen corresponding path program 1 times [2021-11-20 23:38:37,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:38:37,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913187526] [2021-11-20 23:38:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:37,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:38:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:38:37,334 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:38:37,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 23:38:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:37,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 23:38:37,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:37,849 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 36 treesize of output 32 [2021-11-20 23:38:38,059 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 0 case distinctions, treesize of input 53 treesize of output 33 [2021-11-20 23:38:38,152 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 44 treesize of output 28 [2021-11-20 23:38:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:38:40,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:58,464 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ BitVec 32)) (|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ bv0 1)))) (or (= (store .cse0 |c_alloc_node_#res#1.base| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3|) (exists ((|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse1 (store (store |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ bv0 1)))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54|)))))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (store .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |c_alloc_node_#res#1.base|))))))) (_ bv1 1)))) (not (= |c_alloc_node_#res#1.base| (_ bv0 32))))))) is different from false [2021-11-20 23:38:59,248 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ BitVec 32)) (|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ bv0 1)))) (or (= (store .cse0 |c_alloc_node_~temp~0#1.base| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3|) (exists ((|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse1 (store (store |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ bv0 1)))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54|)))))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (store .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))))) (and (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |c_alloc_node_~temp~0#1.base|))))))))))))) (not (= (_ bv0 32) |c_alloc_node_~temp~0#1.base|)))))) is different from false [2021-11-20 23:39:00,055 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ BitVec 32)) (|v_alloc_node_~temp~0#1.base_140| (_ BitVec 32)) (|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (Array (_ BitVec 32) (_ BitVec 1)))) (let ((.cse0 (store (store |c_#valid| |v_alloc_node_~temp~0#1.base_140| (_ bv1 1)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ bv0 1)))) (or (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (store .cse0 |v_alloc_node_~temp~0#1.base_140| (_ bv0 1))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_alloc_node_~temp~0#1.base_140|)))))))))) (_ bv1 1)))) (= |v_alloc_node_~temp~0#1.base_140| (_ bv0 32)) (exists ((|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse1 (store (store |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_~s~0#1.base_BEFORE_CALL_22| (_ bv0 1)))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54|)))))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_3| (store .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_alloc_node_~temp~0#1.base_140|))))))) is different from false [2021-11-20 23:39:17,705 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse1 (store (store |c_#valid| |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |c_alloc_node_#res#1.base| (_ bv0 1)))) (or (exists ((|v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ bv1 1)))) (and (not (= (store (store (store .cse0 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ bv0 1)) |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4|)) (not (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret3#1.base_65|)))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))))))) (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))) (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4| (store .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))) (_ bv1 1))))))) is different from false [2021-11-20 23:39:18,320 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse1 (store (store |c_#valid| |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |c_alloc_node_~temp~0#1.base| (_ bv0 1)))) (or (exists ((|v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ bv1 1)))) (and (not (= (store (store (store .cse0 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ bv0 1)) |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4|)) (not (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret3#1.base_65|)))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))))))) (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32)) (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4| (store .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))))) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~ret4#1.base_54|)))))))))) is different from false [2021-11-20 23:39:18,969 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1))) (|v_alloc_node_~temp~0#1.base_144| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse1 (store |c_#valid| |v_alloc_node_~temp~0#1.base_144| (_ bv1 1)))) (or (exists ((|v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ bv1 1)))) (and (not (= (store (store (store .cse0 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_#t~ret3#1.base_65| (_ bv0 1)) |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4|)) (not (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_main_#t~ret3#1.base_65|)))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_#t~ret4#1.base_54|))))))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_alloc_node_~temp~0#1.base_144|)))))))) (= |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54|)))))))) (= (store (store (store .cse1 |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv1 1)) |v_alloc_node_~temp~0#1.base_144| (_ bv0 1)) |v_ULTIMATE.start_main_#t~ret4#1.base_54| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4|)))) is different from false [2021-11-20 23:39:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-20 23:39:19,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:39:19,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913187526] [2021-11-20 23:39:19,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913187526] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:39:19,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:39:19,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [17] total 31 [2021-11-20 23:39:19,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820589627] [2021-11-20 23:39:19,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:19,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:39:19,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:39:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:39:19,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=576, Unknown=22, NotChecked=318, Total=992 [2021-11-20 23:39:19,008 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:39:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:19,856 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-11-20 23:39:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:39:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-11-20 23:39:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:19,858 INFO L225 Difference]: With dead ends: 29 [2021-11-20 23:39:19,858 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:39:19,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=100, Invalid=772, Unknown=22, NotChecked=366, Total=1260 [2021-11-20 23:39:19,860 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:19,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 49 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 20 Unchecked, 0.4s Time] [2021-11-20 23:39:19,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:39:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:39:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:39:19,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-11-20 23:39:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:19,862 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:39:19,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:39:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:39:19,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:39:19,865 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (14 of 15 remaining) [2021-11-20 23:39:19,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (13 of 15 remaining) [2021-11-20 23:39:19,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (12 of 15 remaining) [2021-11-20 23:39:19,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (11 of 15 remaining) [2021-11-20 23:39:19,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (10 of 15 remaining) [2021-11-20 23:39:19,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (9 of 15 remaining) [2021-11-20 23:39:19,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (8 of 15 remaining) [2021-11-20 23:39:19,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION (7 of 15 remaining) [2021-11-20 23:39:19,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (6 of 15 remaining) [2021-11-20 23:39:19,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (5 of 15 remaining) [2021-11-20 23:39:19,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (4 of 15 remaining) [2021-11-20 23:39:19,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (3 of 15 remaining) [2021-11-20 23:39:19,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (2 of 15 remaining) [2021-11-20 23:39:19,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (1 of 15 remaining) [2021-11-20 23:39:19,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2021-11-20 23:39:19,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 23:39:20,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:39:20,073 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:20,075 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:39:20,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:39:20 BoogieIcfgContainer [2021-11-20 23:39:20,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:39:20,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:39:20,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:39:20,078 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:39:20,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:36" (3/4) ... [2021-11-20 23:39:20,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:39:20,086 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_node [2021-11-20 23:39:20,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-20 23:39:20,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 23:39:20,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 23:39:20,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:39:20,120 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:39:20,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:39:20,121 INFO L158 Benchmark]: Toolchain (without parser) took 224415.51ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 65.7MB in the end (delta: -16.5MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2021-11-20 23:39:20,121 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:39:20,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.13ms. Allocated memory is still 69.2MB. Free memory was 49.0MB in the beginning and 43.2MB in the end (delta: 5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:39:20,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.34ms. Allocated memory is still 69.2MB. Free memory was 43.2MB in the beginning and 41.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:39:20,123 INFO L158 Benchmark]: Boogie Preprocessor took 49.31ms. Allocated memory is still 69.2MB. Free memory was 41.3MB in the beginning and 39.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:39:20,123 INFO L158 Benchmark]: RCFGBuilder took 497.13ms. Allocated memory is still 69.2MB. Free memory was 39.9MB in the beginning and 48.5MB in the end (delta: -8.6MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-20 23:39:20,123 INFO L158 Benchmark]: TraceAbstraction took 223089.37ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 47.9MB in the beginning and 22.2MB in the end (delta: 25.7MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2021-11-20 23:39:20,124 INFO L158 Benchmark]: Witness Printer took 42.99ms. Allocated memory is still 88.1MB. Free memory was 22.2MB in the beginning and 65.7MB in the end (delta: -43.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:39:20,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 662.13ms. Allocated memory is still 69.2MB. Free memory was 49.0MB in the beginning and 43.2MB in the end (delta: 5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.34ms. Allocated memory is still 69.2MB. Free memory was 43.2MB in the beginning and 41.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.31ms. Allocated memory is still 69.2MB. Free memory was 41.3MB in the beginning and 39.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 497.13ms. Allocated memory is still 69.2MB. Free memory was 39.9MB in the beginning and 48.5MB in the end (delta: -8.6MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * TraceAbstraction took 223089.37ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 47.9MB in the beginning and 22.2MB in the end (delta: 25.7MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Witness Printer took 42.99ms. Allocated memory is still 88.1MB. Free memory was 22.2MB in the beginning and 65.7MB in the end (delta: -43.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 568]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 42 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 223.0s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 816 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 486 IncrementalHoareTripleChecker+Unchecked, 637 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 638 IncrementalHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 179 mSDtfsCounter, 638 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 783 GetRequests, 607 SyntacticMatches, 26 SemanticMatches, 150 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 195.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 212.8s InterpolantComputationTime, 401 NumberOfCodeBlocks, 401 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 764 ConstructedInterpolants, 152 QuantifiedInterpolants, 7827 SizeOfPredicates, 61 NumberOfNonLiveVariables, 1184 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 38 InterpolantComputations, 10 PerfectInterpolantSequences, 77/190 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 - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 23:39:20,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4624b2b-a2f8-4bc9-9e3e-3b27b6779c45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE