./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG --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 9c492ba1908c68ae7fad42ab0faa06b28fe0f7f3fdd04d2f1af5f4f1b8416a55 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG --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 9c492ba1908c68ae7fad42ab0faa06b28fe0f7f3fdd04d2f1af5f4f1b8416a55 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:21:21,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:21:21,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:21:21,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:21:21,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:21:21,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:21:21,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:21:21,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:21:21,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:21:21,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:21:21,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:21:21,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:21:21,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:21:21,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:21:21,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:21:21,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:21:21,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:21:21,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:21:21,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:21:21,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:21:21,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:21:21,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:21:21,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:21:21,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:21:21,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:21:21,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:21:21,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:21:21,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:21:21,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:21:21,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:21:21,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:21:21,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:21:21,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:21:21,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:21:21,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:21:21,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:21:21,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:21:21,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:21:21,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:21:21,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:21:21,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:21:21,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:21:21,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:21:21,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:21:21,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:21:21,344 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:21:21,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:21:21,344 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:21:21,344 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:21:21,345 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:21:21,345 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:21:21,345 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:21:21,346 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:21:21,346 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:21:21,346 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:21:21,347 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:21:21,347 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:21:21,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:21:21,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:21:21,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:21:21,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:21:21,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:21:21,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:21:21,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:21:21,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:21:21,349 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:21:21,349 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:21:21,349 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:21:21,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:21:21,351 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:21:21,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:21:21,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:21:21,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:21:21,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:21:21,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:21:21,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:21:21,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:21:21,353 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:21:21,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:21:21,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:21:21,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:21:21,354 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_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c492ba1908c68ae7fad42ab0faa06b28fe0f7f3fdd04d2f1af5f4f1b8416a55 [2021-10-29 05:21:21,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:21:21,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:21:21,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:21:21,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:21:21,683 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:21:21,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_2.i [2021-10-29 05:21:21,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/03b9a07d9/5d9cc390fe294f0db56286c684e542d6/FLAG9ed614904 [2021-10-29 05:21:22,418 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:21:22,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/sv-benchmarks/c/ldv-memsafety/memleaks_test11_2.i [2021-10-29 05:21:22,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/03b9a07d9/5d9cc390fe294f0db56286c684e542d6/FLAG9ed614904 [2021-10-29 05:21:22,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/03b9a07d9/5d9cc390fe294f0db56286c684e542d6 [2021-10-29 05:21:22,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:21:22,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:21:22,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:22,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:21:22,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:21:22,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:22" (1/1) ... [2021-10-29 05:21:22,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eedf902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:22, skipping insertion in model container [2021-10-29 05:21:22,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:22" (1/1) ... [2021-10-29 05:21:22,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:21:22,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:21:23,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:23,157 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) [2021-10-29 05:21:23,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d6e7fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:23, skipping insertion in model container [2021-10-29 05:21:23,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:23,159 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:21:23,161 INFO L168 Benchmark]: Toolchain (without parser) took 461.64 ms. Allocated memory is still 146.8 MB. Free memory was 111.3 MB in the beginning and 116.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:21:23,162 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:21:23,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.95 ms. Allocated memory is still 146.8 MB. Free memory was 111.3 MB in the beginning and 116.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:21:23,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 458.95 ms. Allocated memory is still 146.8 MB. Free memory was 111.3 MB in the beginning and 116.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:21:25,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:21:25,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:21:25,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:21:25,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:21:25,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:21:25,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:21:25,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:21:25,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:21:25,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:21:25,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:21:25,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:21:25,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:21:25,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:21:25,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:21:25,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:21:25,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:21:25,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:21:25,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:21:25,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:21:25,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:21:25,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:21:25,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:21:25,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:21:25,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:21:25,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:21:25,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:21:25,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:21:25,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:21:25,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:21:25,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:21:25,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:21:25,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:21:25,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:21:25,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:21:25,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:21:25,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:21:25,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:21:25,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:21:25,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:21:25,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:21:25,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:21:25,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:21:25,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:21:25,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:21:25,378 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:21:25,379 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:21:25,379 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:21:25,379 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:21:25,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:21:25,380 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:21:25,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:21:25,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:21:25,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:21:25,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:21:25,382 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:21:25,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:21:25,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:21:25,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:21:25,382 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:21:25,383 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:21:25,383 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:21:25,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:21:25,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:21:25,384 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:21:25,384 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:21:25,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:21:25,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:21:25,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:21:25,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:21:25,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:21:25,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:21:25,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:21:25,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:21:25,386 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:21:25,386 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:21:25,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:21:25,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:21:25,387 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_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c492ba1908c68ae7fad42ab0faa06b28fe0f7f3fdd04d2f1af5f4f1b8416a55 [2021-10-29 05:21:25,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:21:25,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:21:25,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:21:25,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:21:25,826 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:21:25,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_2.i [2021-10-29 05:21:25,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/5ac2976eb/4c99730d92cf415bbe4d4c1ff86a9e18/FLAG1509074f6 [2021-10-29 05:21:26,511 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:21:26,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/sv-benchmarks/c/ldv-memsafety/memleaks_test11_2.i [2021-10-29 05:21:26,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/5ac2976eb/4c99730d92cf415bbe4d4c1ff86a9e18/FLAG1509074f6 [2021-10-29 05:21:26,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/data/5ac2976eb/4c99730d92cf415bbe4d4c1ff86a9e18 [2021-10-29 05:21:26,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:21:26,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:21:26,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:26,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:21:26,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:21:26,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:26" (1/1) ... [2021-10-29 05:21:26,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be71783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:26, skipping insertion in model container [2021-10-29 05:21:26,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:21:26" (1/1) ... [2021-10-29 05:21:26,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:21:26,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:21:27,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:27,318 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:21:27,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:21:27,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:27,375 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:21:27,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:21:27,483 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:21:27,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27 WrapperNode [2021-10-29 05:21:27,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:21:27,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:21:27,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:21:27,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:21:27,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:21:27,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:21:27,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:21:27,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:21:27,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:21:27,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:21:27,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:21:27,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:21:27,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (1/1) ... [2021-10-29 05:21:27,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:21:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:21:27,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:21:27,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:21:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:21:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:21:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:21:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:21:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:21:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 05:21:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:21:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:21:28,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:21:28,273 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-29 05:21:28,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:28 BoogieIcfgContainer [2021-10-29 05:21:28,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:21:28,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:21:28,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:21:28,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:21:28,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:21:26" (1/3) ... [2021-10-29 05:21:28,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2433a584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:21:28, skipping insertion in model container [2021-10-29 05:21:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:21:27" (2/3) ... [2021-10-29 05:21:28,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2433a584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:21:28, skipping insertion in model container [2021-10-29 05:21:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:28" (3/3) ... [2021-10-29 05:21:28,283 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test11_2.i [2021-10-29 05:21:28,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:21:28,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-10-29 05:21:28,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:21:28,339 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 [2021-10-29 05:21:28,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-10-29 05:21:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 78 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:21:28,360 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:28,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:21:28,362 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:28,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:28,367 INFO L85 PathProgramCache]: Analyzing trace with hash 889508829, now seen corresponding path program 1 times [2021-10-29 05:21:28,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:28,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104971414] [2021-10-29 05:21:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:28,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:28,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:28,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:28,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:21:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:28,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:21:28,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:28,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:28,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:28,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104971414] [2021-10-29 05:21:28,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104971414] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:28,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:28,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:21:28,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165626301] [2021-10-29 05:21:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:28,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:28,666 INFO L87 Difference]: Start difference. First operand has 79 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 78 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:28,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:28,853 INFO L93 Difference]: Finished difference Result 295 states and 317 transitions. [2021-10-29 05:21:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:21:28,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:21:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:28,867 INFO L225 Difference]: With dead ends: 295 [2021-10-29 05:21:28,867 INFO L226 Difference]: Without dead ends: 287 [2021-10-29 05:21:28,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-29 05:21:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 79. [2021-10-29 05:21:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.74) internal successors, (87), 78 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-10-29 05:21:28,907 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 6 [2021-10-29 05:21:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:28,908 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-10-29 05:21:28,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-10-29 05:21:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:21:28,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:28,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:21:28,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:29,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:29,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash 889568411, now seen corresponding path program 1 times [2021-10-29 05:21:29,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:29,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000722011] [2021-10-29 05:21:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:29,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:29,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:29,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:29,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:21:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:29,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:21:29,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:29,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:29,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:29,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000722011] [2021-10-29 05:21:29,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000722011] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:29,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:29,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:21:29,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556124674] [2021-10-29 05:21:29,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:21:29,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:29,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:21:29,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:21:29,230 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:29,385 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2021-10-29 05:21:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:21:29,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:21:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:29,387 INFO L225 Difference]: With dead ends: 150 [2021-10-29 05:21:29,387 INFO L226 Difference]: Without dead ends: 149 [2021-10-29 05:21:29,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:21:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-29 05:21:29,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 77. [2021-10-29 05:21:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 48 states have (on average 1.75) internal successors, (84), 76 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-10-29 05:21:29,397 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 6 [2021-10-29 05:21:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:29,397 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-10-29 05:21:29,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-10-29 05:21:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:21:29,398 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:29,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:29,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:29,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:29,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:29,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash -592189876, now seen corresponding path program 1 times [2021-10-29 05:21:29,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:29,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598970704] [2021-10-29 05:21:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:29,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:29,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:29,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:29,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:21:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:29,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:21:29,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:29,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:29,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:29,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598970704] [2021-10-29 05:21:29,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598970704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:29,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:29,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:21:29,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2797659] [2021-10-29 05:21:29,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:29,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:29,817 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:29,944 INFO L93 Difference]: Finished difference Result 274 states and 291 transitions. [2021-10-29 05:21:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:21:29,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:21:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:29,947 INFO L225 Difference]: With dead ends: 274 [2021-10-29 05:21:29,947 INFO L226 Difference]: Without dead ends: 274 [2021-10-29 05:21:29,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-29 05:21:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 79. [2021-10-29 05:21:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.72) internal successors, (86), 78 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-10-29 05:21:29,957 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 9 [2021-10-29 05:21:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:29,957 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-10-29 05:21:29,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-10-29 05:21:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:21:29,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:29,958 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:29,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:30,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:30,169 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash -592189907, now seen corresponding path program 1 times [2021-10-29 05:21:30,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:30,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327059940] [2021-10-29 05:21:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:30,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:30,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:30,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:21:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:30,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:21:30,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:30,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:21:30,420 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 05:21:30,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-10-29 05:21:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:30,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:30,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:30,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327059940] [2021-10-29 05:21:30,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327059940] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:30,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:30,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:21:30,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321800087] [2021-10-29 05:21:30,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:30,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:30,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:30,544 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:30,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:30,793 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2021-10-29 05:21:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:21:30,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:21:30,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:30,796 INFO L225 Difference]: With dead ends: 166 [2021-10-29 05:21:30,796 INFO L226 Difference]: Without dead ends: 166 [2021-10-29 05:21:30,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-29 05:21:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 90. [2021-10-29 05:21:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 89 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-10-29 05:21:30,804 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 9 [2021-10-29 05:21:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:30,804 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-10-29 05:21:30,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-10-29 05:21:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:21:30,805 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:30,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:30,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-29 05:21:31,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:31,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:31,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:31,018 INFO L85 PathProgramCache]: Analyzing trace with hash -592189906, now seen corresponding path program 1 times [2021-10-29 05:21:31,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:31,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246139098] [2021-10-29 05:21:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:31,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:31,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:31,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:21:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:31,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:21:31,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:31,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:21:31,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:21:31,301 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 05:21:31,302 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 28 treesize of output 30 [2021-10-29 05:21:31,318 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:21:31,319 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 22 treesize of output 22 [2021-10-29 05:21:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:31,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:33,833 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 26 treesize of output 24 [2021-10-29 05:21:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:33,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:33,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246139098] [2021-10-29 05:21:33,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246139098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:33,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:33,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:21:33,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956153128] [2021-10-29 05:21:33,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:21:33,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:21:33,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-10-29 05:21:33,900 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:41,834 INFO L93 Difference]: Finished difference Result 303 states and 322 transitions. [2021-10-29 05:21:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:21:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:21:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:41,837 INFO L225 Difference]: With dead ends: 303 [2021-10-29 05:21:41,837 INFO L226 Difference]: Without dead ends: 303 [2021-10-29 05:21:41,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=101, Invalid=240, Unknown=1, NotChecked=0, Total=342 [2021-10-29 05:21:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-29 05:21:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 126. [2021-10-29 05:21:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 97 states have (on average 1.690721649484536) internal successors, (164), 125 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2021-10-29 05:21:41,847 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 9 [2021-10-29 05:21:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:41,847 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2021-10-29 05:21:41,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2021-10-29 05:21:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:21:41,849 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:41,849 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:41,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-29 05:21:42,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:42,060 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1182817455, now seen corresponding path program 1 times [2021-10-29 05:21:42,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:42,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553555846] [2021-10-29 05:21:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:42,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:42,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:42,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:42,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:21:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:42,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:21:42,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:42,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:42,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:42,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553555846] [2021-10-29 05:21:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553555846] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:42,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:42,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:21:42,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891185230] [2021-10-29 05:21:42,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:42,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:42,235 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:42,322 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2021-10-29 05:21:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:21:42,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:21:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:42,324 INFO L225 Difference]: With dead ends: 145 [2021-10-29 05:21:42,324 INFO L226 Difference]: Without dead ends: 143 [2021-10-29 05:21:42,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-29 05:21:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 79. [2021-10-29 05:21:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 78 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-10-29 05:21:42,329 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 9 [2021-10-29 05:21:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:42,329 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-10-29 05:21:42,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-10-29 05:21:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:21:42,330 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:42,330 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:42,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:42,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:42,531 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1176169776, now seen corresponding path program 1 times [2021-10-29 05:21:42,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:42,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697377742] [2021-10-29 05:21:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:42,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:42,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:42,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:21:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:42,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:21:42,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:42,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:42,789 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:42,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697377742] [2021-10-29 05:21:42,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697377742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:42,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:42,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-29 05:21:42,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382164658] [2021-10-29 05:21:42,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:21:42,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:42,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:21:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:21:42,791 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:42,946 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2021-10-29 05:21:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:21:42,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:21:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:42,948 INFO L225 Difference]: With dead ends: 141 [2021-10-29 05:21:42,948 INFO L226 Difference]: Without dead ends: 141 [2021-10-29 05:21:42,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:21:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-29 05:21:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 78. [2021-10-29 05:21:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 77 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2021-10-29 05:21:42,952 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 10 [2021-10-29 05:21:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:42,953 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2021-10-29 05:21:42,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2021-10-29 05:21:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:21:42,954 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:42,954 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:42,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:43,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:43,163 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -722750891, now seen corresponding path program 1 times [2021-10-29 05:21:43,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:43,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183555044] [2021-10-29 05:21:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:43,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:43,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:43,165 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:43,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:21:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:43,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:21:43,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:43,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:47,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:47,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183555044] [2021-10-29 05:21:47,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183555044] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:47,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:47,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 05:21:47,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208020965] [2021-10-29 05:21:47,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:21:47,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:47,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:21:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-10-29 05:21:47,558 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:48,351 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2021-10-29 05:21:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:21:48,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:21:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:48,352 INFO L225 Difference]: With dead ends: 138 [2021-10-29 05:21:48,353 INFO L226 Difference]: Without dead ends: 134 [2021-10-29 05:21:48,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2021-10-29 05:21:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-29 05:21:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 73. [2021-10-29 05:21:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 48 states have (on average 1.625) internal successors, (78), 72 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-10-29 05:21:48,356 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 12 [2021-10-29 05:21:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:48,357 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-10-29 05:21:48,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-10-29 05:21:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:21:48,357 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:48,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:48,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:48,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:48,567 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:48,567 INFO L85 PathProgramCache]: Analyzing trace with hash -493394208, now seen corresponding path program 1 times [2021-10-29 05:21:48,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:48,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337005364] [2021-10-29 05:21:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:48,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:48,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:48,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:48,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:21:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:48,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:21:48,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:48,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:48,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:48,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337005364] [2021-10-29 05:21:48,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337005364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:48,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:48,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:21:48,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575258675] [2021-10-29 05:21:48,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:48,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:48,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:48,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:48,746 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:48,826 INFO L93 Difference]: Finished difference Result 231 states and 242 transitions. [2021-10-29 05:21:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:21:48,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:21:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:48,828 INFO L225 Difference]: With dead ends: 231 [2021-10-29 05:21:48,828 INFO L226 Difference]: Without dead ends: 231 [2021-10-29 05:21:48,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-29 05:21:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 75. [2021-10-29 05:21:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.6) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-29 05:21:48,832 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 14 [2021-10-29 05:21:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:48,833 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-29 05:21:48,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-29 05:21:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:21:48,834 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:48,834 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:48,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:49,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:49,046 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -493394216, now seen corresponding path program 1 times [2021-10-29 05:21:49,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:49,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799534496] [2021-10-29 05:21:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:49,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:49,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:49,048 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:49,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:21:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:49,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:21:49,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:49,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:21:49,273 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 05:21:49,273 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 20 treesize of output 25 [2021-10-29 05:21:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:49,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:49,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:49,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799534496] [2021-10-29 05:21:49,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799534496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:49,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:49,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:21:49,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529816836] [2021-10-29 05:21:49,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:21:49,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:21:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:21:49,382 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:49,610 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-10-29 05:21:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:21:49,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:21:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:49,612 INFO L225 Difference]: With dead ends: 146 [2021-10-29 05:21:49,612 INFO L226 Difference]: Without dead ends: 146 [2021-10-29 05:21:49,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:21:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-29 05:21:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 88. [2021-10-29 05:21:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 87 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-10-29 05:21:49,618 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 14 [2021-10-29 05:21:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:49,619 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-10-29 05:21:49,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-10-29 05:21:49,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:21:49,620 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:49,620 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:49,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:21:49,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:21:49,829 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:21:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:21:49,829 INFO L85 PathProgramCache]: Analyzing trace with hash -493394215, now seen corresponding path program 1 times [2021-10-29 05:21:49,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:21:49,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14495] [2021-10-29 05:21:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:21:49,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:21:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:21:49,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:21:49,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:21:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:21:49,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:21:49,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:21:49,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:21:49,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:21:50,111 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 05:21:50,111 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 28 treesize of output 30 [2021-10-29 05:21:50,124 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:21:50,124 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 22 treesize of output 22 [2021-10-29 05:21:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:50,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:21:50,690 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 27 treesize of output 25 [2021-10-29 05:21:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:21:50,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:21:50,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14495] [2021-10-29 05:21:50,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14495] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:21:50,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:21:50,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:21:50,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689969540] [2021-10-29 05:21:50,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:21:50,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:21:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:21:50,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:21:50,728 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:21:59,850 INFO L93 Difference]: Finished difference Result 267 states and 278 transitions. [2021-10-29 05:21:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 05:21:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:21:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:21:59,853 INFO L225 Difference]: With dead ends: 267 [2021-10-29 05:21:59,853 INFO L226 Difference]: Without dead ends: 267 [2021-10-29 05:21:59,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-10-29 05:21:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-29 05:21:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 116. [2021-10-29 05:21:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 91 states have (on average 1.5934065934065933) internal successors, (145), 115 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 145 transitions. [2021-10-29 05:21:59,858 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 145 transitions. Word has length 14 [2021-10-29 05:21:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:21:59,859 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 145 transitions. [2021-10-29 05:21:59,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:21:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 145 transitions. [2021-10-29 05:21:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:21:59,860 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:21:59,860 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:21:59,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:00,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:00,070 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 186664154, now seen corresponding path program 1 times [2021-10-29 05:22:00,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:00,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124050383] [2021-10-29 05:22:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:00,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:00,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:00,071 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:00,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 05:22:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:00,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:22:00,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:00,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:00,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:00,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124050383] [2021-10-29 05:22:00,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124050383] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:00,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:00,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:22:00,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877601346] [2021-10-29 05:22:00,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:00,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:00,325 INFO L87 Difference]: Start difference. First operand 116 states and 145 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:00,397 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-10-29 05:22:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:00,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:22:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:00,398 INFO L225 Difference]: With dead ends: 133 [2021-10-29 05:22:00,398 INFO L226 Difference]: Without dead ends: 131 [2021-10-29 05:22:00,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:22:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-29 05:22:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 75. [2021-10-29 05:22:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.509433962264151) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-29 05:22:00,402 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 14 [2021-10-29 05:22:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:00,402 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-29 05:22:00,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-29 05:22:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:22:00,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:00,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:00,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-29 05:22:00,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:00,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1886495925, now seen corresponding path program 1 times [2021-10-29 05:22:00,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:00,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088974086] [2021-10-29 05:22:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:00,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:00,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:00,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:00,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 05:22:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:00,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:22:00,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:01,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:01,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:01,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088974086] [2021-10-29 05:22:01,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088974086] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:01,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:01,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-10-29 05:22:01,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814846976] [2021-10-29 05:22:01,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:22:01,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:22:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:22:01,167 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:01,330 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-10-29 05:22:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:22:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:22:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:01,331 INFO L225 Difference]: With dead ends: 74 [2021-10-29 05:22:01,331 INFO L226 Difference]: Without dead ends: 74 [2021-10-29 05:22:01,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:22:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-29 05:22:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-29 05:22:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 53 states have (on average 1.471698113207547) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-10-29 05:22:01,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 15 [2021-10-29 05:22:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:01,334 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-10-29 05:22:01,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-10-29 05:22:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:22:01,335 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:01,335 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:01,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:01,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:01,536 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1705438503, now seen corresponding path program 1 times [2021-10-29 05:22:01,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:01,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070236058] [2021-10-29 05:22:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:01,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:01,539 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:01,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-29 05:22:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:01,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:22:01,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:01,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:22:01,829 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:22:01,829 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 23 treesize of output 30 [2021-10-29 05:22:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:01,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:06,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:06,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070236058] [2021-10-29 05:22:06,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070236058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:06,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:06,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-29 05:22:06,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653418777] [2021-10-29 05:22:06,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:22:06,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:22:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=42, Unknown=2, NotChecked=0, Total=72 [2021-10-29 05:22:06,121 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:06,573 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2021-10-29 05:22:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:22:06,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:22:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:06,575 INFO L225 Difference]: With dead ends: 169 [2021-10-29 05:22:06,575 INFO L226 Difference]: Without dead ends: 169 [2021-10-29 05:22:06,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=54, Invalid=76, Unknown=2, NotChecked=0, Total=132 [2021-10-29 05:22:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-29 05:22:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 73. [2021-10-29 05:22:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-10-29 05:22:06,578 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 16 [2021-10-29 05:22:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:06,579 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-10-29 05:22:06,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-10-29 05:22:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:22:06,579 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:06,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:06,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-29 05:22:06,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:06,798 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:06,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:06,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1705438502, now seen corresponding path program 1 times [2021-10-29 05:22:06,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:06,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289044060] [2021-10-29 05:22:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:06,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:06,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:06,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:06,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-29 05:22:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:06,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 05:22:06,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:06,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:22:06,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:22:07,087 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:22:07,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-29 05:22:07,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-29 05:22:07,245 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 05:22:07,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-10-29 05:22:07,270 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:22:07,270 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 19 treesize of output 19 [2021-10-29 05:22:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:07,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:07,815 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-29 05:22:07,815 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 32 treesize of output 31 [2021-10-29 05:22:10,428 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 27 treesize of output 25 [2021-10-29 05:22:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:10,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:10,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289044060] [2021-10-29 05:22:10,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289044060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:10,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:10,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-10-29 05:22:10,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354523743] [2021-10-29 05:22:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:22:10,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:22:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:22:10,469 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:19,457 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2021-10-29 05:22:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:22:19,458 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:22:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:19,459 INFO L225 Difference]: With dead ends: 143 [2021-10-29 05:22:19,459 INFO L226 Difference]: Without dead ends: 143 [2021-10-29 05:22:19,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-10-29 05:22:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-29 05:22:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 72. [2021-10-29 05:22:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-10-29 05:22:19,462 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 16 [2021-10-29 05:22:19,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:19,463 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-10-29 05:22:19,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-10-29 05:22:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:22:19,464 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:19,464 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:19,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-29 05:22:19,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:19,676 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:19,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1751106330, now seen corresponding path program 1 times [2021-10-29 05:22:19,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:19,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301027928] [2021-10-29 05:22:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:19,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:19,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:19,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:19,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-29 05:22:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:19,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 05:22:19,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:19,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:22:19,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:22:20,125 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-29 05:22:20,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 40 [2021-10-29 05:22:20,286 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:20,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 57 [2021-10-29 05:22:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:20,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:20,705 INFO L354 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2021-10-29 05:22:20,706 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 81 treesize of output 80 [2021-10-29 05:22:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:20,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:20,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301027928] [2021-10-29 05:22:20,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301027928] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:20,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:20,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 8] imperfect sequences [] total 18 [2021-10-29 05:22:20,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48259145] [2021-10-29 05:22:20,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-29 05:22:20,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-29 05:22:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:22:20,829 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:24,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:24,995 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2021-10-29 05:22:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 05:22:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:22:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:24,997 INFO L225 Difference]: With dead ends: 119 [2021-10-29 05:22:24,997 INFO L226 Difference]: Without dead ends: 119 [2021-10-29 05:22:24,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2021-10-29 05:22:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-29 05:22:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2021-10-29 05:22:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-10-29 05:22:25,001 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 18 [2021-10-29 05:22:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:25,001 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-10-29 05:22:25,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-10-29 05:22:25,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:22:25,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:25,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:25,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:25,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:25,203 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1751106331, now seen corresponding path program 1 times [2021-10-29 05:22:25,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:25,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135894199] [2021-10-29 05:22:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:25,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:25,204 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:25,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-29 05:22:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:25,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 05:22:25,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:25,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:22:25,464 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:22:25,464 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 19 treesize of output 19 [2021-10-29 05:22:25,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:22:25,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:22:25,684 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-29 05:22:25,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 59 [2021-10-29 05:22:25,699 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-29 05:22:25,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-10-29 05:22:25,788 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 45 treesize of output 33 [2021-10-29 05:22:25,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-10-29 05:22:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:25,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:26,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:26,211 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 70 treesize of output 74 [2021-10-29 05:22:27,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:22:27,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:22:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:27,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:27,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135894199] [2021-10-29 05:22:27,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135894199] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:27,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:27,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-10-29 05:22:27,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405248056] [2021-10-29 05:22:27,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-29 05:22:27,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-29 05:22:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:22:27,482 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:30,908 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2021-10-29 05:22:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-29 05:22:30,908 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:22:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:30,909 INFO L225 Difference]: With dead ends: 139 [2021-10-29 05:22:30,909 INFO L226 Difference]: Without dead ends: 139 [2021-10-29 05:22:30,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2021-10-29 05:22:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-29 05:22:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 79. [2021-10-29 05:22:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.360655737704918) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-10-29 05:22:30,913 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 18 [2021-10-29 05:22:30,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:30,913 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-10-29 05:22:30,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:30,913 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-10-29 05:22:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:22:30,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:30,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:30,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:31,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:31,118 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:31,118 INFO L85 PathProgramCache]: Analyzing trace with hash 941759704, now seen corresponding path program 1 times [2021-10-29 05:22:31,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:31,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071375230] [2021-10-29 05:22:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:31,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:31,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:31,120 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:31,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-29 05:22:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:31,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:22:31,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:31,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:31,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:31,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071375230] [2021-10-29 05:22:31,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071375230] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:31,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:31,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:22:31,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280374976] [2021-10-29 05:22:31,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:31,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:31,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:31,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:31,427 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:31,490 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2021-10-29 05:22:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:31,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:22:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:31,494 INFO L225 Difference]: With dead ends: 120 [2021-10-29 05:22:31,494 INFO L226 Difference]: Without dead ends: 120 [2021-10-29 05:22:31,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:22:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-29 05:22:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 73. [2021-10-29 05:22:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-10-29 05:22:31,497 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 18 [2021-10-29 05:22:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:31,497 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-10-29 05:22:31,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-10-29 05:22:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:22:31,500 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:31,500 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:31,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:31,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:31,712 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:31,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1179459719, now seen corresponding path program 1 times [2021-10-29 05:22:31,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:31,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106849655] [2021-10-29 05:22:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:31,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:31,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:31,714 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:31,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-29 05:22:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:31,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:22:31,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:34,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:41,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:41,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106849655] [2021-10-29 05:22:41,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106849655] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:41,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-29 05:22:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654750033] [2021-10-29 05:22:41,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:22:41,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:22:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=167, Unknown=4, NotChecked=0, Total=210 [2021-10-29 05:22:41,246 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:50,261 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-10-29 05:22:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:22:50,262 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 05:22:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:50,262 INFO L225 Difference]: With dead ends: 74 [2021-10-29 05:22:50,262 INFO L226 Difference]: Without dead ends: 65 [2021-10-29 05:22:50,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=76, Invalid=299, Unknown=5, NotChecked=0, Total=380 [2021-10-29 05:22:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-29 05:22:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-29 05:22:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2021-10-29 05:22:50,264 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 20 [2021-10-29 05:22:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:50,265 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2021-10-29 05:22:50,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2021-10-29 05:22:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:22:50,266 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:50,266 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:50,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:50,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:50,477 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:22:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -373354461, now seen corresponding path program 1 times [2021-10-29 05:22:50,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:50,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103313922] [2021-10-29 05:22:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:50,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:50,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:50,480 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:50,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-29 05:22:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:50,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 05:22:50,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:50,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:22:50,836 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:22:50,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-29 05:22:50,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:22:50,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:22:50,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:22:51,107 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-29 05:22:51,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 50 [2021-10-29 05:22:51,124 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-29 05:22:51,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 47 [2021-10-29 05:22:51,198 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 46 treesize of output 38 [2021-10-29 05:22:51,338 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-29 05:22:51,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 26 [2021-10-29 05:22:51,419 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:22:51,420 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 33 treesize of output 40 [2021-10-29 05:22:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:51,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:23:41,837 INFO L354 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2021-10-29 05:23:41,838 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 238 treesize of output 198 [2021-10-29 05:23:43,863 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_entry_point_~fe~1.offset (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res.base_77| (_ BitVec 32))) (= |v_ULTIMATE.start_ldv_malloc_#res.base_77| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset |v_ULTIMATE.start_ldv_malloc_#res.base_77|)))) (select .cse0 (select (select .cse0 c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset ULTIMATE.start_entry_point_~fe~1.offset)) c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset)))) is different from false [2021-10-29 05:23:43,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:23:43,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 849 treesize of output 729 [2021-10-29 05:23:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:23:44,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:23:44,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103313922] [2021-10-29 05:23:44,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103313922] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:23:44,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:23:44,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 15] imperfect sequences [] total 24 [2021-10-29 05:23:44,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945528262] [2021-10-29 05:23:44,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-29 05:23:44,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:23:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-29 05:23:44,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=479, Unknown=14, NotChecked=44, Total=600 [2021-10-29 05:23:44,175 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:11,751 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2021-10-29 05:24:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-29 05:24:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 05:24:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:11,753 INFO L225 Difference]: With dead ends: 120 [2021-10-29 05:24:11,753 INFO L226 Difference]: Without dead ends: 120 [2021-10-29 05:24:11,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 67.2s TimeCoverageRelationStatistics Valid=341, Invalid=1287, Unknown=16, NotChecked=78, Total=1722 [2021-10-29 05:24:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-29 05:24:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 64. [2021-10-29 05:24:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.375) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-29 05:24:11,756 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 23 [2021-10-29 05:24:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:11,757 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-29 05:24:11,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-29 05:24:11,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:24:11,757 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:11,758 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:11,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-29 05:24:11,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:24:11,958 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:24:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash -373354460, now seen corresponding path program 1 times [2021-10-29 05:24:11,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:11,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154979402] [2021-10-29 05:24:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:11,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:11,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:11,961 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:11,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-29 05:24:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:12,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-29 05:24:12,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:12,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:24:12,392 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:24:12,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-29 05:24:12,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:24:12,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:24:12,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:24:12,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:24:12,811 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-29 05:24:12,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 55 [2021-10-29 05:24:12,835 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-29 05:24:12,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 60 [2021-10-29 05:24:13,276 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-29 05:24:13,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 49 [2021-10-29 05:24:13,285 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-29 05:24:13,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 30 [2021-10-29 05:24:13,470 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 05:24:13,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-29 05:24:13,482 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:24:13,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-10-29 05:24:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:13,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:22,517 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 538 treesize of output 500 [2021-10-29 05:24:22,521 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 500 treesize of output 498 [2021-10-29 05:24:24,854 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_ldv_malloc_#res.base_84| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset (_ bv0 32))))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset |v_ULTIMATE.start_ldv_malloc_#res.base_84|)) c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset)) (select (select .cse0 c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset)))) c_ULTIMATE.start_ldv_malloc_~size)) (forall ((|v_ULTIMATE.start_ldv_malloc_#res.base_84| (_ BitVec 32))) (= |v_ULTIMATE.start_ldv_malloc_#res.base_84| (select (let ((.cse1 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset |v_ULTIMATE.start_ldv_malloc_#res.base_84|)))) (select .cse1 (select (select .cse1 c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset (_ bv0 32))) c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset)))) (forall ((|v_ULTIMATE.start_ldv_malloc_#res.base_84| (_ BitVec 32))) (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset (_ bv0 32))))) (select (select .cse3 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~cfg~1.base) c_ULTIMATE.start_entry_point_~cfg~1.offset |v_ULTIMATE.start_ldv_malloc_#res.base_84|)) c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset)) (select (select .cse3 c_ULTIMATE.start_entry_point_~c11~0.base) c_ULTIMATE.start_entry_point_~c11~0.offset))))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) is different from false [2021-10-29 05:24:41,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:24:41,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 420 treesize of output 364 [2021-10-29 05:24:41,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:24:41,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:24:41,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:24:41,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:24:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:41,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:24:41,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154979402] [2021-10-29 05:24:41,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154979402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:24:41,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:24:41,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 16] imperfect sequences [] total 27 [2021-10-29 05:24:41,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462661677] [2021-10-29 05:24:41,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-29 05:24:41,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:24:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-29 05:24:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=623, Unknown=7, NotChecked=50, Total=756 [2021-10-29 05:24:41,928 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:53,760 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2021-10-29 05:24:53,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-29 05:24:53,762 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 05:24:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:53,763 INFO L225 Difference]: With dead ends: 118 [2021-10-29 05:24:53,763 INFO L226 Difference]: Without dead ends: 118 [2021-10-29 05:24:53,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=367, Invalid=1610, Unknown=7, NotChecked=86, Total=2070 [2021-10-29 05:24:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-29 05:24:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 63. [2021-10-29 05:24:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2021-10-29 05:24:53,766 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 23 [2021-10-29 05:24:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:53,767 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2021-10-29 05:24:53,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2021-10-29 05:24:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 05:24:53,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:53,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:53,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-29 05:24:53,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:24:53,968 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:24:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1310912065, now seen corresponding path program 1 times [2021-10-29 05:24:53,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:53,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560581290] [2021-10-29 05:24:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:53,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:53,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:53,970 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:53,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-29 05:24:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:54,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:24:54,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:54,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:54,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:24:54,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560581290] [2021-10-29 05:24:54,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560581290] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:24:54,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:24:54,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:24:54,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160525966] [2021-10-29 05:24:54,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:24:54,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:24:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:24:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:24:54,412 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:54,474 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2021-10-29 05:24:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:24:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-29 05:24:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:54,476 INFO L225 Difference]: With dead ends: 101 [2021-10-29 05:24:54,476 INFO L226 Difference]: Without dead ends: 101 [2021-10-29 05:24:54,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:24:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-29 05:24:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 65. [2021-10-29 05:24:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.34) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2021-10-29 05:24:54,479 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 24 [2021-10-29 05:24:54,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:54,479 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2021-10-29 05:24:54,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2021-10-29 05:24:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 05:24:54,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:54,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:54,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-29 05:24:54,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:24:54,681 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:24:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:54,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1312759107, now seen corresponding path program 1 times [2021-10-29 05:24:54,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:54,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099694094] [2021-10-29 05:24:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:54,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:54,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:54,682 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:54,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-29 05:24:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:55,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:24:55,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:55,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:55,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:24:55,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099694094] [2021-10-29 05:24:55,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099694094] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:24:55,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:24:55,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:24:55,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202046758] [2021-10-29 05:24:55,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:24:55,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:24:55,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:24:55,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:24:55,184 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:55,342 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-29 05:24:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:24:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-29 05:24:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:55,343 INFO L225 Difference]: With dead ends: 69 [2021-10-29 05:24:55,344 INFO L226 Difference]: Without dead ends: 69 [2021-10-29 05:24:55,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:24:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-29 05:24:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2021-10-29 05:24:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 50 states have (on average 1.3) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2021-10-29 05:24:55,346 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 24 [2021-10-29 05:24:55,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:55,346 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2021-10-29 05:24:55,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2021-10-29 05:24:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 05:24:55,347 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:55,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:55,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-29 05:24:55,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:24:55,550 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:24:55,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:55,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1312759108, now seen corresponding path program 1 times [2021-10-29 05:24:55,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:55,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074390074] [2021-10-29 05:24:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:55,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:55,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:55,551 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:55,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-29 05:24:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:55,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-29 05:24:55,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:55,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:24:55,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:24:56,027 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:24:56,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-29 05:24:56,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-29 05:24:56,211 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 05:24:56,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-10-29 05:24:56,240 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:24:56,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-29 05:24:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:56,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:57,210 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-29 05:24:57,210 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 36 treesize of output 35 [2021-10-29 05:25:00,057 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 29 treesize of output 27 [2021-10-29 05:25:00,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:00,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:00,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074390074] [2021-10-29 05:25:00,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074390074] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:00,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:00,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-29 05:25:00,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741840386] [2021-10-29 05:25:00,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:25:00,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:25:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:25:00,104 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:05,619 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2021-10-29 05:25:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 05:25:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-29 05:25:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:05,622 INFO L225 Difference]: With dead ends: 107 [2021-10-29 05:25:05,622 INFO L226 Difference]: Without dead ends: 107 [2021-10-29 05:25:05,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-10-29 05:25:05,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-29 05:25:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 61. [2021-10-29 05:25:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.26) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-29 05:25:05,624 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 24 [2021-10-29 05:25:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:05,625 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-29 05:25:05,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-29 05:25:05,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 05:25:05,625 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:05,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:05,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:05,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:05,838 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1565587052, now seen corresponding path program 1 times [2021-10-29 05:25:05,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:05,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150972690] [2021-10-29 05:25:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:05,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:05,841 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:05,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-29 05:25:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:06,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:25:06,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:06,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:06,535 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-29 05:25:06,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2021-10-29 05:25:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:06,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:06,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150972690] [2021-10-29 05:25:06,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150972690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:06,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:06,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:25:06,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286331391] [2021-10-29 05:25:06,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:25:06,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:25:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:06,578 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:06,798 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-10-29 05:25:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:25:06,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-29 05:25:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:06,800 INFO L225 Difference]: With dead ends: 66 [2021-10-29 05:25:06,800 INFO L226 Difference]: Without dead ends: 66 [2021-10-29 05:25:06,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:25:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-29 05:25:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-10-29 05:25:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.24) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-10-29 05:25:06,803 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 27 [2021-10-29 05:25:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:06,804 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-10-29 05:25:06,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-10-29 05:25:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 05:25:06,805 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:06,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:06,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:07,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:07,021 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1565587051, now seen corresponding path program 1 times [2021-10-29 05:25:07,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:07,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814051622] [2021-10-29 05:25:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:07,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:07,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:07,023 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:07,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-29 05:25:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:07,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-29 05:25:07,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:07,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:07,922 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:07,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-10-29 05:25:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:08,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:08,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814051622] [2021-10-29 05:25:08,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814051622] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:08,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:08,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-29 05:25:08,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993166982] [2021-10-29 05:25:08,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 05:25:08,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 05:25:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:25:08,528 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:08,897 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-10-29 05:25:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:25:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-29 05:25:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:08,898 INFO L225 Difference]: With dead ends: 59 [2021-10-29 05:25:08,898 INFO L226 Difference]: Without dead ends: 59 [2021-10-29 05:25:08,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:25:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-29 05:25:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-29 05:25:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.22) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-29 05:25:08,900 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 27 [2021-10-29 05:25:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:08,900 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-29 05:25:08,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-29 05:25:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 05:25:08,900 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:08,901 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:08,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:09,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:09,101 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash 239500490, now seen corresponding path program 1 times [2021-10-29 05:25:09,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:09,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804359545] [2021-10-29 05:25:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:09,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:09,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:09,103 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:09,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-29 05:25:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:09,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-29 05:25:09,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:09,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:25:09,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:25:09,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-29 05:25:09,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-29 05:25:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:10,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:10,267 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 38 treesize of output 32 [2021-10-29 05:25:10,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:25:10,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:25:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:10,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:10,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804359545] [2021-10-29 05:25:10,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804359545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:10,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:10,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 16 [2021-10-29 05:25:10,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321596107] [2021-10-29 05:25:10,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-29 05:25:10,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-29 05:25:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:25:10,491 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:11,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:11,565 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-10-29 05:25:11,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 05:25:11,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 05:25:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:11,566 INFO L225 Difference]: With dead ends: 53 [2021-10-29 05:25:11,567 INFO L226 Difference]: Without dead ends: 53 [2021-10-29 05:25:11,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-29 05:25:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-29 05:25:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-29 05:25:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.148936170212766) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-10-29 05:25:11,569 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 32 [2021-10-29 05:25:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:11,569 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-10-29 05:25:11,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:11,570 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-10-29 05:25:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 05:25:11,570 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:11,570 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:11,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:11,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:11,771 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash 239500747, now seen corresponding path program 1 times [2021-10-29 05:25:11,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:11,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707170218] [2021-10-29 05:25:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:11,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:11,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:11,773 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:11,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-29 05:25:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:12,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:12,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:12,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:12,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:12,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707170218] [2021-10-29 05:25:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707170218] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:12,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:12,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:25:12,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360296624] [2021-10-29 05:25:12,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:12,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:12,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:12,461 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:12,497 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-10-29 05:25:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:25:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 05:25:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:12,498 INFO L225 Difference]: With dead ends: 52 [2021-10-29 05:25:12,498 INFO L226 Difference]: Without dead ends: 52 [2021-10-29 05:25:12,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-29 05:25:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-29 05:25:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.127659574468085) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-10-29 05:25:12,501 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 32 [2021-10-29 05:25:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:12,501 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-10-29 05:25:12,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-10-29 05:25:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:25:12,502 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:12,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:12,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:12,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:12,702 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1165411295, now seen corresponding path program 1 times [2021-10-29 05:25:12,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:12,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790372131] [2021-10-29 05:25:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:12,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:12,704 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:12,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-29 05:25:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:13,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:25:13,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:13,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:13,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:13,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790372131] [2021-10-29 05:25:13,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790372131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:13,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:13,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-10-29 05:25:13,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439597832] [2021-10-29 05:25:13,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:25:13,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:25:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:25:13,913 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:14,065 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2021-10-29 05:25:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:25:14,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-29 05:25:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:14,066 INFO L225 Difference]: With dead ends: 51 [2021-10-29 05:25:14,066 INFO L226 Difference]: Without dead ends: 51 [2021-10-29 05:25:14,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:25:14,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-29 05:25:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-29 05:25:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-10-29 05:25:14,069 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 33 [2021-10-29 05:25:14,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:14,070 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-10-29 05:25:14,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-10-29 05:25:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 05:25:14,071 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:14,071 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:14,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:14,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:14,286 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1768011635, now seen corresponding path program 1 times [2021-10-29 05:25:14,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:14,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315356115] [2021-10-29 05:25:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:14,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:14,287 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:14,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-29 05:25:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:14,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:14,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:14,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:14,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:14,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:14,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315356115] [2021-10-29 05:25:14,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315356115] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:14,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:14,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:25:14,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218107612] [2021-10-29 05:25:14,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:25:14,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:25:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:25:14,991 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:15,122 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2021-10-29 05:25:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:25:15,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-29 05:25:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:15,123 INFO L225 Difference]: With dead ends: 63 [2021-10-29 05:25:15,123 INFO L226 Difference]: Without dead ends: 63 [2021-10-29 05:25:15,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-29 05:25:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2021-10-29 05:25:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-10-29 05:25:15,125 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 34 [2021-10-29 05:25:15,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:15,125 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-10-29 05:25:15,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-10-29 05:25:15,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 05:25:15,126 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:15,126 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:15,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:15,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:15,330 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1650523386, now seen corresponding path program 1 times [2021-10-29 05:25:15,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:15,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764137495] [2021-10-29 05:25:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:15,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:15,332 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:15,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-29 05:25:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:15,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:25:15,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:15,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:15,938 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:25:15,938 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 25 treesize of output 32 [2021-10-29 05:25:16,512 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-29 05:25:16,513 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 43 treesize of output 46 [2021-10-29 05:25:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:16,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:19,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:19,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764137495] [2021-10-29 05:25:19,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764137495] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:19,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:19,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-29 05:25:19,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320997143] [2021-10-29 05:25:19,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:25:19,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:25:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2021-10-29 05:25:19,020 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:47,598 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2021-10-29 05:25:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:25:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-29 05:25:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:47,599 INFO L225 Difference]: With dead ends: 65 [2021-10-29 05:25:47,599 INFO L226 Difference]: Without dead ends: 65 [2021-10-29 05:25:47,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=61, Invalid=147, Unknown=2, NotChecked=0, Total=210 [2021-10-29 05:25:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-29 05:25:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2021-10-29 05:25:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-10-29 05:25:47,602 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 37 [2021-10-29 05:25:47,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:47,602 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-10-29 05:25:47,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-10-29 05:25:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-29 05:25:47,603 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:47,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:47,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:47,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:47,804 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:25:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1956436716, now seen corresponding path program 1 times [2021-10-29 05:25:47,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:47,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742542240] [2021-10-29 05:25:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:47,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:47,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:47,806 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:47,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-29 05:25:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:48,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 05:25:48,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:48,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:48,442 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:25:48,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-29 05:25:48,583 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 05:25:48,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-29 05:25:49,230 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-29 05:25:49,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-10-29 05:25:49,507 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-29 05:25:49,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 54 [2021-10-29 05:25:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:49,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:56,348 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-29 05:25:56,348 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 55 treesize of output 50 [2021-10-29 05:25:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:56,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:56,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742542240] [2021-10-29 05:25:56,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742542240] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:56,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:56,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-10-29 05:25:56,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138875646] [2021-10-29 05:25:56,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 05:25:56,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:56,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 05:25:56,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=200, Unknown=3, NotChecked=0, Total=272 [2021-10-29 05:25:56,389 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:45,292 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-10-29 05:26:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:26:45,293 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-29 05:26:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:45,294 INFO L225 Difference]: With dead ends: 69 [2021-10-29 05:26:45,294 INFO L226 Difference]: Without dead ends: 69 [2021-10-29 05:26:45,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=158, Invalid=438, Unknown=4, NotChecked=0, Total=600 [2021-10-29 05:26:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-29 05:26:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 48. [2021-10-29 05:26:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-10-29 05:26:45,297 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 40 [2021-10-29 05:26:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:45,298 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-10-29 05:26:45,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:45,298 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-10-29 05:26:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-29 05:26:45,299 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:45,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:45,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-29 05:26:45,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:45,506 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:26:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:45,506 INFO L85 PathProgramCache]: Analyzing trace with hash -519995891, now seen corresponding path program 1 times [2021-10-29 05:26:45,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:45,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490666165] [2021-10-29 05:26:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:45,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:45,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:45,508 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:45,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-29 05:26:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:46,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-29 05:26:46,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:53,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:09,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:09,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490666165] [2021-10-29 05:27:09,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490666165] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:09,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:09,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-29 05:27:09,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546302132] [2021-10-29 05:27:09,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-29 05:27:09,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-29 05:27:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=353, Unknown=9, NotChecked=0, Total=420 [2021-10-29 05:27:09,642 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:28,797 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-10-29 05:27:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:27:28,798 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-29 05:27:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:28,798 INFO L225 Difference]: With dead ends: 68 [2021-10-29 05:27:28,798 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 05:27:28,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=109, Invalid=582, Unknown=11, NotChecked=0, Total=702 [2021-10-29 05:27:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 05:27:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-29 05:27:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0) internal successors, (42), 42 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2021-10-29 05:27:28,800 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 41 [2021-10-29 05:27:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:28,801 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2021-10-29 05:27:28,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2021-10-29 05:27:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-29 05:27:28,801 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:28,801 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:28,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:29,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:29,002 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-29 05:27:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash 430545156, now seen corresponding path program 1 times [2021-10-29 05:27:29,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:29,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683237760] [2021-10-29 05:27:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:29,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:29,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:29,004 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:29,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-29 05:27:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:27:29,844 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:27:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:27:30,183 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:27:30,183 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:27:30,184 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:27:30,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:27:30,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:27:30,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:27:30,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:27:30,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 05:27:30,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:27:30,187 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 05:27:30,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-29 05:27:30,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-29 05:27:30,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-29 05:27:30,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-29 05:27:30,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-29 05:27:30,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-29 05:27:30,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-29 05:27:30,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-29 05:27:30,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-29 05:27:30,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,191 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:27:30,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:30,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:30,414 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:30,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:27:30,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:27:30 BoogieIcfgContainer [2021-10-29 05:27:30,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:27:30,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:27:30,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:27:30,489 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:27:30,489 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:28" (3/4) ... [2021-10-29 05:27:30,493 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:27:30,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:27:30,494 INFO L168 Benchmark]: Toolchain (without parser) took 363759.57 ms. Allocated memory was 69.2 MB in the beginning and 111.1 MB in the end (delta: 41.9 MB). Free memory was 49.5 MB in the beginning and 61.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:30,494 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 69.2 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:27:30,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.50 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 33.8 MB in the end (delta: 15.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:30,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.66 ms. Allocated memory is still 69.2 MB. Free memory was 33.6 MB in the beginning and 31.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:30,496 INFO L168 Benchmark]: Boogie Preprocessor took 63.84 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 31.0 MB in the beginning and 74.2 MB in the end (delta: -43.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:30,496 INFO L168 Benchmark]: RCFGBuilder took 645.32 ms. Allocated memory is still 92.3 MB. Free memory was 74.2 MB in the beginning and 56.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:30,497 INFO L168 Benchmark]: TraceAbstraction took 362210.64 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.8 MB in the beginning and 62.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:30,497 INFO L168 Benchmark]: Witness Printer took 4.67 ms. Allocated memory is still 111.1 MB. Free memory was 62.4 MB in the beginning and 61.4 MB in the end (delta: 976.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:27:30,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 69.2 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 747.50 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 33.8 MB in the end (delta: 15.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.66 ms. Allocated memory is still 69.2 MB. Free memory was 33.6 MB in the beginning and 31.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.84 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 31.0 MB in the beginning and 74.2 MB in the end (delta: -43.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 645.32 ms. Allocated memory is still 92.3 MB. Free memory was 74.2 MB in the beginning and 56.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 362210.64 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.8 MB in the beginning and 62.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.67 ms. Allocated memory is still 111.1 MB. Free memory was 62.4 MB in the beginning and 61.4 MB in the end (delta: 976.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 822]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 822. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={-134217728:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L802] struct ldv_i2c_client *c11 = (struct ldv_i2c_client *)ldv_malloc(sizeof(struct ldv_i2c_client)); [L803] COND FALSE !(!c11) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L804-L805] struct ldv_m88ts2022_config *cfg = (struct ldv_m88ts2022_config *) ldv_malloc(sizeof(struct ldv_m88ts2022_config)); [L806] COND FALSE !(!cfg) VAL [ldv_global_msg_list={-134217728:0}] [L807] c11->dev.platform_data = cfg VAL [ldv_global_msg_list={-134217728:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L808-L809] struct ldv_dvb_frontend *fe = (struct ldv_dvb_frontend *) ldv_malloc(sizeof(struct ldv_dvb_frontend)); [L810] COND FALSE !(!fe) VAL [ldv_global_msg_list={-134217728:0}] [L811] cfg->fe = fe VAL [ldv_global_msg_list={-134217728:0}] [L784] EXPR client->dev.platform_data VAL [ldv_global_msg_list={-134217728:0}] [L784] struct ldv_m88ts2022_config *cfg = client->dev.platform_data; [L785] EXPR cfg->fe VAL [ldv_global_msg_list={-134217728:0}] [L785] struct ldv_dvb_frontend *fe = cfg->fe; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L786] struct Data11 *priv = (struct Data11*)ldv_malloc(sizeof(struct Data11)); [L787] COND FALSE !(!priv) VAL [ldv_global_msg_list={-134217728:0}] [L788] fe->tuner_priv = priv VAL [ldv_global_msg_list={-134217728:0}] [L623] dev->driver_data = data VAL [ldv_global_msg_list={-134217728:0}] [L790] return 0; VAL [ldv_global_msg_list={-134217728:0}] [L619] EXPR dev->driver_data VAL [ldv_global_msg_list={-134217728:0}] [L619] return dev->driver_data; [L774] return ldv_dev_get_drvdata(&dev->dev); [L796] void *priv = (struct Data11*)ldv_i2c_get_clientdata(client); [L797] COND FALSE !(\read(*priv)) VAL [ldv_global_msg_list={-134217728:0}] [L814] free(fe) VAL [ldv_global_msg_list={-134217728:0}] [L814] free(fe) VAL [ldv_global_msg_list={-134217728:0}] [L814] free(fe) [L816] free(cfg) VAL [ldv_global_msg_list={-134217728:0}] [L816] free(cfg) VAL [ldv_global_msg_list={-134217728:0}] [L816] free(cfg) [L818] free(c11) VAL [ldv_global_msg_list={-134217728:0}] [L818] free(c11) VAL [ldv_global_msg_list={-134217728:0}] [L818] free(c11) - UnprovableResult [Line: 807]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 807]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 811]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 811]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 79 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 362.0s, OverallIterations: 34, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 189.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1947 SDtfs, 9116 SDslu, 4893 SDs, 0 SdLazy, 6326 SolverSat, 728 SolverUnsat, 45 SolverUnknown, 0 SolverNotchecked, 118.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1443 GetRequests, 972 SyntacticMatches, 37 SemanticMatches, 434 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 205.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=5, InterpolantAutomatonStates: 323, 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, 33 MinimizatonAttempts, 1908 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 155.5s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1270 ConstructedInterpolants, 166 QuantifiedInterpolants, 16128 SizeOfPredicates, 297 NumberOfNonLiveVariables, 2923 ConjunctsInSsa, 377 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:27:30,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29c18a-c04a-4a52-abbe-cfa7efdf06e1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...