./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:22:55,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:22:55,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:22:55,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:22:55,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:22:55,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:22:55,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:22:55,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:22:55,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:22:55,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:22:55,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:22:55,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:22:55,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:22:55,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:22:55,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:22:55,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:22:55,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:22:55,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:22:55,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:22:55,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:22:55,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:22:55,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:22:55,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:22:55,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:22:55,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:22:55,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:22:55,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:22:55,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:22:55,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:22:55,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:22:55,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:22:55,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:22:55,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:22:55,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:22:55,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:22:55,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:22:55,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:22:55,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:22:55,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:22:55,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:22:55,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:22:55,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:22:55,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:22:55,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:22:55,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:22:55,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:22:55,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:22:55,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:22:55,505 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:22:55,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:22:55,505 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:22:55,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:22:55,506 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:22:55,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:22:55,507 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:22:55,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:22:55,507 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:22:55,508 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:22:55,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:22:55,508 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:22:55,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:22:55,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:22:55,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:22:55,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:22:55,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:22:55,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:22:55,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:22:55,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:22:55,512 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:22:55,512 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:22:55,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:22:55,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:22:55,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:22:55,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:22:55,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:22:55,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:22:55,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:22:55,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:22:55,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:22:55,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:22:55,515 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:22:55,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:22:55,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:22:55,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:22:55,516 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_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2021-11-23 03:22:55,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:22:55,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:22:55,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:22:55,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:22:55,874 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:22:55,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-23 03:22:55,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/1bc0d605b/c661efddde664fbc9a698f1e96132ea6/FLAGc44a8a533 [2021-11-23 03:22:56,648 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:22:56,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-23 03:22:56,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/1bc0d605b/c661efddde664fbc9a698f1e96132ea6/FLAGc44a8a533 [2021-11-23 03:22:56,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/1bc0d605b/c661efddde664fbc9a698f1e96132ea6 [2021-11-23 03:22:56,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:22:56,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:22:56,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:22:56,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:22:56,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:22:56,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:56" (1/1) ... [2021-11-23 03:22:56,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2315a71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:56, skipping insertion in model container [2021-11-23 03:22:56,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:56" (1/1) ... [2021-11-23 03:22:56,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:22:56,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:22:57,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:22:57,533 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 03:22:57,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3946a9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:57, skipping insertion in model container [2021-11-23 03:22:57,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:22:57,534 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 03:22:57,536 INFO L158 Benchmark]: Toolchain (without parser) took 663.16ms. Allocated memory is still 90.2MB. Free memory was 67.7MB in the beginning and 61.1MB in the end (delta: 6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:22:57,537 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 9.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:22:57,538 INFO L158 Benchmark]: CACSL2BoogieTranslator took 658.02ms. Allocated memory is still 90.2MB. Free memory was 67.7MB in the beginning and 61.4MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:22:57,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 9.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 658.02ms. Allocated memory is still 90.2MB. Free memory was 67.7MB in the beginning and 61.4MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:23:00,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:23:00,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:23:00,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:23:00,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:23:00,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:23:00,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:23:00,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:23:00,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:23:00,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:23:00,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:23:00,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:23:00,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:23:00,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:23:00,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:23:00,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:23:00,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:23:00,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:23:00,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:23:00,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:23:00,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:23:00,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:23:00,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:23:00,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:23:00,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:23:00,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:23:00,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:23:00,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:23:00,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:23:00,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:23:00,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:23:00,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:23:00,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:23:00,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:23:00,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:23:00,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:23:00,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:23:00,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:23:00,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:23:00,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:23:00,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:23:00,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 03:23:00,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:23:00,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:23:00,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:23:00,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:23:00,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:23:00,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:23:00,275 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:23:00,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:23:00,276 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:23:00,276 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:23:00,277 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:23:00,278 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:23:00,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:23:00,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:23:00,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:23:00,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:23:00,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:23:00,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:23:00,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:23:00,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:23:00,282 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:23:00,282 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:23:00,282 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:23:00,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:23:00,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:23:00,283 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:23:00,283 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:23:00,283 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:23:00,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:23:00,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:23:00,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:23:00,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:23:00,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:23:00,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:23:00,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:23:00,286 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:23:00,286 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:23:00,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:23:00,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:23:00,287 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_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2021-11-23 03:23:00,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:23:00,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:23:00,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:23:00,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:23:00,771 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:23:00,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-23 03:23:00,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/d9b44aecb/6f4fbd18ac78425daa8c26ee4f7a9c70/FLAGac9a7e30d [2021-11-23 03:23:01,587 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:23:01,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-23 03:23:01,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/d9b44aecb/6f4fbd18ac78425daa8c26ee4f7a9c70/FLAGac9a7e30d [2021-11-23 03:23:01,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/data/d9b44aecb/6f4fbd18ac78425daa8c26ee4f7a9c70 [2021-11-23 03:23:01,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:23:01,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:23:01,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:23:01,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:23:01,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:23:01,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:01" (1/1) ... [2021-11-23 03:23:01,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb39e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:01, skipping insertion in model container [2021-11-23 03:23:01,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:01" (1/1) ... [2021-11-23 03:23:01,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:23:01,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:23:02,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:23:02,439 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 03:23:02,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:23:02,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:23:02,514 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:23:02,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:23:02,658 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:23:02,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02 WrapperNode [2021-11-23 03:23:02,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:23:02,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:23:02,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:23:02,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:23:02,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,755 INFO L137 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 184 [2021-11-23 03:23:02,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:23:02,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:23:02,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:23:02,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:23:02,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:23:02,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:23:02,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:23:02,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:23:02,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (1/1) ... [2021-11-23 03:23:02,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:23:02,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:23:02,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:23:02,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:23:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 03:23:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-23 03:23:02,944 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-23 03:23:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-23 03:23:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-23 03:23:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:23:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:23:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:23:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:23:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2021-11-23 03:23:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2021-11-23 03:23:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:23:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:23:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:23:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:23:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:23:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:23:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-23 03:23:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-23 03:23:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:23:02,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:23:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:23:02,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:23:03,230 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:23:03,248 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:23:04,052 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:23:04,068 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:23:04,069 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:23:04,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:04 BoogieIcfgContainer [2021-11-23 03:23:04,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:23:04,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:23:04,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:23:04,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:23:04,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:23:01" (1/3) ... [2021-11-23 03:23:04,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b7ae17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:04, skipping insertion in model container [2021-11-23 03:23:04,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:02" (2/3) ... [2021-11-23 03:23:04,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b7ae17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:04, skipping insertion in model container [2021-11-23 03:23:04,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:04" (3/3) ... [2021-11-23 03:23:04,085 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2021-11-23 03:23:04,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:23:04,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-23 03:23:04,152 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:23:04,161 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:23:04,161 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-23 03:23:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:23:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:23:04,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:04,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:04,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385922, now seen corresponding path program 1 times [2021-11-23 03:23:04,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:04,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510493800] [2021-11-23 03:23:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:04,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:04,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:04,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:23:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:04,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:23:04,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:04,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:23:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:04,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:04,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510493800] [2021-11-23 03:23:04,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510493800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:04,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:04,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 03:23:04,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310445248] [2021-11-23 03:23:04,650 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:04,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:23:04,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:23:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:23:04,694 INFO L87 Difference]: Start difference. First operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:05,836 INFO L93 Difference]: Finished difference Result 225 states and 241 transitions. [2021-11-23 03:23:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:23:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 03:23:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:05,853 INFO L225 Difference]: With dead ends: 225 [2021-11-23 03:23:05,853 INFO L226 Difference]: Without dead ends: 221 [2021-11-23 03:23:05,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:23:05,859 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 28 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:05,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 813 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 03:23:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-23 03:23:05,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2021-11-23 03:23:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7876106194690264) internal successors, (202), 188 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-23 03:23:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 221 transitions. [2021-11-23 03:23:05,925 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 221 transitions. Word has length 12 [2021-11-23 03:23:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:05,926 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 221 transitions. [2021-11-23 03:23:05,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 221 transitions. [2021-11-23 03:23:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:23:05,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:05,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:05,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:06,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:06,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385921, now seen corresponding path program 1 times [2021-11-23 03:23:06,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:06,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214118278] [2021-11-23 03:23:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:06,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:06,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:06,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:23:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:06,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:23:06,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:06,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:23:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:06,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:07,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:07,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214118278] [2021-11-23 03:23:07,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214118278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:07,093 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:07,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-23 03:23:07,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017476409] [2021-11-23 03:23:07,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:07,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:23:07,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:23:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:23:07,096 INFO L87 Difference]: Start difference. First operand 205 states and 221 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:23:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:09,555 INFO L93 Difference]: Finished difference Result 231 states and 247 transitions. [2021-11-23 03:23:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:23:09,560 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2021-11-23 03:23:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:09,563 INFO L225 Difference]: With dead ends: 231 [2021-11-23 03:23:09,563 INFO L226 Difference]: Without dead ends: 231 [2021-11-23 03:23:09,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:23:09,566 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 38 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:09,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 1639 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 03:23:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-23 03:23:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 205. [2021-11-23 03:23:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 188 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-23 03:23:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2021-11-23 03:23:09,587 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 12 [2021-11-23 03:23:09,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:09,588 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2021-11-23 03:23:09,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:23:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2021-11-23 03:23:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:23:09,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:09,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:09,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:09,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:09,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash -95575587, now seen corresponding path program 1 times [2021-11-23 03:23:09,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:09,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022854944] [2021-11-23 03:23:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:09,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:09,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:09,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:23:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:09,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:23:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:10,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:10,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:10,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022854944] [2021-11-23 03:23:10,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022854944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:10,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:10,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 03:23:10,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003451876] [2021-11-23 03:23:10,152 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:10,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:23:10,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:23:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:23:10,154 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:10,208 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2021-11-23 03:23:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:23:10,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 03:23:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:10,213 INFO L225 Difference]: With dead ends: 217 [2021-11-23 03:23:10,213 INFO L226 Difference]: Without dead ends: 217 [2021-11-23 03:23:10,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:23:10,215 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:10,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 814 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:23:10,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-23 03:23:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2021-11-23 03:23:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.761467889908257) internal successors, (192), 180 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-23 03:23:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 209 transitions. [2021-11-23 03:23:10,267 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 209 transitions. Word has length 12 [2021-11-23 03:23:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:10,268 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 209 transitions. [2021-11-23 03:23:10,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 209 transitions. [2021-11-23 03:23:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:23:10,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:10,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:10,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:10,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:10,482 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1838471554, now seen corresponding path program 1 times [2021-11-23 03:23:10,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:10,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142813923] [2021-11-23 03:23:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:10,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:10,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:10,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:10,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:23:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:23:10,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:10,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:10,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:10,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142813923] [2021-11-23 03:23:10,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142813923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:10,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:10,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 03:23:10,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127720895] [2021-11-23 03:23:10,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:10,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:23:10,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:10,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:23:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:23:10,653 INFO L87 Difference]: Start difference. First operand 196 states and 209 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:10,705 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2021-11-23 03:23:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:23:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 03:23:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:10,712 INFO L225 Difference]: With dead ends: 217 [2021-11-23 03:23:10,713 INFO L226 Difference]: Without dead ends: 217 [2021-11-23 03:23:10,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:23:10,714 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 121 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:10,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 754 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:23:10,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-23 03:23:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2021-11-23 03:23:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.7522935779816513) internal successors, (191), 180 states have internal predecessors, (191), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-23 03:23:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2021-11-23 03:23:10,732 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 12 [2021-11-23 03:23:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:10,732 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2021-11-23 03:23:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2021-11-23 03:23:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:23:10,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:10,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:10,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:10,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:10,946 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -95661219, now seen corresponding path program 1 times [2021-11-23 03:23:10,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:10,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930365148] [2021-11-23 03:23:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:10,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:10,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:10,954 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:10,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:23:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:11,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:23:11,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:11,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:11,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:11,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930365148] [2021-11-23 03:23:11,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930365148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:11,164 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:11,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:23:11,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111702561] [2021-11-23 03:23:11,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:11,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:23:11,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:23:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:23:11,168 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:23:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:11,279 INFO L93 Difference]: Finished difference Result 209 states and 218 transitions. [2021-11-23 03:23:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:23:11,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-23 03:23:11,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:11,284 INFO L225 Difference]: With dead ends: 209 [2021-11-23 03:23:11,284 INFO L226 Difference]: Without dead ends: 209 [2021-11-23 03:23:11,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:23:11,291 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 220 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:11,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 908 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:23:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-23 03:23:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2021-11-23 03:23:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.7387387387387387) internal successors, (193), 182 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-23 03:23:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2021-11-23 03:23:11,320 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 12 [2021-11-23 03:23:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:11,320 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2021-11-23 03:23:11,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:23:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2021-11-23 03:23:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:23:11,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:11,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:11,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:11,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:11,537 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:11,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1329489612, now seen corresponding path program 1 times [2021-11-23 03:23:11,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:11,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930618153] [2021-11-23 03:23:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:11,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:11,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:11,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:11,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:23:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:11,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:23:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:11,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:11,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:11,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930618153] [2021-11-23 03:23:11,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930618153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:11,725 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:11,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:23:11,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533710163] [2021-11-23 03:23:11,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:11,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:23:11,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:23:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:23:11,727 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:12,266 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2021-11-23 03:23:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:23:12,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-23 03:23:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:12,270 INFO L225 Difference]: With dead ends: 212 [2021-11-23 03:23:12,270 INFO L226 Difference]: Without dead ends: 204 [2021-11-23 03:23:12,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:23:12,272 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 51 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:12,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 382 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:23:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-23 03:23:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 194. [2021-11-23 03:23:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 108 states have (on average 1.75) internal successors, (189), 179 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:23:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 205 transitions. [2021-11-23 03:23:12,305 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 205 transitions. Word has length 13 [2021-11-23 03:23:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:12,305 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 205 transitions. [2021-11-23 03:23:12,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:23:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 205 transitions. [2021-11-23 03:23:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:23:12,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:12,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:12,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:12,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:12,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -317607953, now seen corresponding path program 1 times [2021-11-23 03:23:12,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091389192] [2021-11-23 03:23:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:12,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:12,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:12,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:12,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 03:23:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:12,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 03:23:12,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:14,932 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:23:14,933 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 [2021-11-23 03:23:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:15,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:29,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:29,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091389192] [2021-11-23 03:23:29,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091389192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:29,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:29,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-23 03:23:29,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628115187] [2021-11-23 03:23:29,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:29,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:23:29,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:29,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:23:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=118, Unknown=5, NotChecked=0, Total=156 [2021-11-23 03:23:29,582 INFO L87 Difference]: Start difference. First operand 194 states and 205 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:23:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:34,860 INFO L93 Difference]: Finished difference Result 194 states and 205 transitions. [2021-11-23 03:23:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:23:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2021-11-23 03:23:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:34,863 INFO L225 Difference]: With dead ends: 194 [2021-11-23 03:23:34,863 INFO L226 Difference]: Without dead ends: 194 [2021-11-23 03:23:34,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=56, Invalid=177, Unknown=7, NotChecked=0, Total=240 [2021-11-23 03:23:34,864 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 14 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:34,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 993 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 549 Unchecked, 1.1s Time] [2021-11-23 03:23:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-23 03:23:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2021-11-23 03:23:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 178 states have internal predecessors, (188), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:23:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 204 transitions. [2021-11-23 03:23:34,873 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 204 transitions. Word has length 16 [2021-11-23 03:23:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:34,873 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 204 transitions. [2021-11-23 03:23:34,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:23:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 204 transitions. [2021-11-23 03:23:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:23:34,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:34,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:34,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:35,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:35,088 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash -317607954, now seen corresponding path program 1 times [2021-11-23 03:23:35,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:35,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349571432] [2021-11-23 03:23:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:35,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:35,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:35,090 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:35,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 03:23:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:35,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:23:35,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:35,356 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:23:35,357 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 27 treesize of output 34 [2021-11-23 03:23:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:35,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:42,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:42,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349571432] [2021-11-23 03:23:42,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349571432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:42,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:42,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-23 03:23:42,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810026006] [2021-11-23 03:23:42,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:42,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:23:42,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:23:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=118, Unknown=3, NotChecked=0, Total=156 [2021-11-23 03:23:42,419 INFO L87 Difference]: Start difference. First operand 193 states and 204 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:23:45,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:45,670 INFO L93 Difference]: Finished difference Result 202 states and 216 transitions. [2021-11-23 03:23:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:23:45,671 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2021-11-23 03:23:45,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:45,673 INFO L225 Difference]: With dead ends: 202 [2021-11-23 03:23:45,673 INFO L226 Difference]: Without dead ends: 202 [2021-11-23 03:23:45,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=55, Invalid=180, Unknown=5, NotChecked=0, Total=240 [2021-11-23 03:23:45,674 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 57 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:45,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 966 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 261 Invalid, 0 Unknown, 461 Unchecked, 0.6s Time] [2021-11-23 03:23:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-23 03:23:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2021-11-23 03:23:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 108 states have (on average 1.7314814814814814) internal successors, (187), 177 states have internal predecessors, (187), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:23:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 203 transitions. [2021-11-23 03:23:45,685 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 203 transitions. Word has length 16 [2021-11-23 03:23:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:45,685 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 203 transitions. [2021-11-23 03:23:45,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:23:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 203 transitions. [2021-11-23 03:23:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:23:45,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:45,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:45,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:45,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:45,903 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:45,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:45,903 INFO L85 PathProgramCache]: Analyzing trace with hash -778576348, now seen corresponding path program 1 times [2021-11-23 03:23:45,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:45,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708088947] [2021-11-23 03:23:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:45,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:45,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:45,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:45,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:23:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:46,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:23:46,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:46,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:23:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:46,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:46,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:46,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708088947] [2021-11-23 03:23:46,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708088947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:46,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:46,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 03:23:46,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715306002] [2021-11-23 03:23:46,192 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:46,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:23:46,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:23:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:23:46,194 INFO L87 Difference]: Start difference. First operand 192 states and 203 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:23:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:46,983 INFO L93 Difference]: Finished difference Result 241 states and 258 transitions. [2021-11-23 03:23:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:23:46,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-11-23 03:23:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:46,990 INFO L225 Difference]: With dead ends: 241 [2021-11-23 03:23:46,991 INFO L226 Difference]: Without dead ends: 241 [2021-11-23 03:23:46,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:23:46,992 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 63 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:46,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 623 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:23:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-23 03:23:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 216. [2021-11-23 03:23:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 201 states have internal predecessors, (235), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:23:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2021-11-23 03:23:47,002 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 25 [2021-11-23 03:23:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:47,003 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2021-11-23 03:23:47,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:23:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2021-11-23 03:23:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:23:47,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:47,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:47,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:47,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:47,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -778576347, now seen corresponding path program 1 times [2021-11-23 03:23:47,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:47,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287986141] [2021-11-23 03:23:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:47,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:47,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:47,219 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:47,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:23:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:47,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:23:47,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:47,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:23:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:47,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:47,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:47,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287986141] [2021-11-23 03:23:47,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287986141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:47,991 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:47,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 03:23:47,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539201368] [2021-11-23 03:23:47,992 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:47,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:23:47,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:23:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:23:47,993 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:23:50,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:50,865 INFO L93 Difference]: Finished difference Result 275 states and 294 transitions. [2021-11-23 03:23:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:23:50,866 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2021-11-23 03:23:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:50,869 INFO L225 Difference]: With dead ends: 275 [2021-11-23 03:23:50,869 INFO L226 Difference]: Without dead ends: 275 [2021-11-23 03:23:50,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:23:50,870 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 97 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:50,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 966 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 03:23:50,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-23 03:23:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 218. [2021-11-23 03:23:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 137 states have (on average 1.72992700729927) internal successors, (237), 202 states have internal predecessors, (237), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:23:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 255 transitions. [2021-11-23 03:23:50,889 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 255 transitions. Word has length 25 [2021-11-23 03:23:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:50,889 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 255 transitions. [2021-11-23 03:23:50,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:23:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 255 transitions. [2021-11-23 03:23:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:23:50,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:50,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:50,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:51,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:51,091 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash -887499840, now seen corresponding path program 1 times [2021-11-23 03:23:51,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:51,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827084673] [2021-11-23 03:23:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:51,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:51,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:51,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:51,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:23:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:51,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:23:51,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:51,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:51,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827084673] [2021-11-23 03:23:51,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827084673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:51,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:51,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 03:23:51,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093690853] [2021-11-23 03:23:51,400 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:51,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:23:51,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:51,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:23:51,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:23:51,401 INFO L87 Difference]: Start difference. First operand 218 states and 255 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:23:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:51,561 INFO L93 Difference]: Finished difference Result 218 states and 254 transitions. [2021-11-23 03:23:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:23:51,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-23 03:23:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:51,563 INFO L225 Difference]: With dead ends: 218 [2021-11-23 03:23:51,564 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 03:23:51,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:23:51,565 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 112 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:51,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 802 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:23:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 03:23:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-23 03:23:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 137 states have (on average 1.7226277372262773) internal successors, (236), 202 states have internal predecessors, (236), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:23:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2021-11-23 03:23:51,578 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 254 transitions. Word has length 27 [2021-11-23 03:23:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:51,578 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 254 transitions. [2021-11-23 03:23:51,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:23:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 254 transitions. [2021-11-23 03:23:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:23:51,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:51,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:51,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:51,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:51,799 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:51,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:51,799 INFO L85 PathProgramCache]: Analyzing trace with hash -542371696, now seen corresponding path program 1 times [2021-11-23 03:23:51,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:51,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309964097] [2021-11-23 03:23:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:51,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:51,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:51,801 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:51,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:23:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:51,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:23:51,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:51,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:23:52,086 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 03:23:52,087 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 [2021-11-23 03:23:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:52,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:23:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:23:58,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:23:58,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309964097] [2021-11-23 03:23:58,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309964097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:23:58,911 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:23:58,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 03:23:58,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875841461] [2021-11-23 03:23:58,912 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:23:58,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:23:58,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:23:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:23:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=80, Unknown=3, NotChecked=0, Total=110 [2021-11-23 03:23:58,914 INFO L87 Difference]: Start difference. First operand 218 states and 254 transitions. Second operand has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:23:59,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:23:59,254 INFO L93 Difference]: Finished difference Result 239 states and 283 transitions. [2021-11-23 03:23:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:23:59,255 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-23 03:23:59,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:23:59,257 INFO L225 Difference]: With dead ends: 239 [2021-11-23 03:23:59,257 INFO L226 Difference]: Without dead ends: 239 [2021-11-23 03:23:59,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=27, Invalid=80, Unknown=3, NotChecked=0, Total=110 [2021-11-23 03:23:59,258 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 70 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:23:59,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 708 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 359 Unchecked, 0.3s Time] [2021-11-23 03:23:59,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-23 03:23:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 221. [2021-11-23 03:23:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 205 states have internal predecessors, (241), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:23:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 259 transitions. [2021-11-23 03:23:59,269 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 259 transitions. Word has length 33 [2021-11-23 03:23:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:23:59,270 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 259 transitions. [2021-11-23 03:23:59,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:23:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 259 transitions. [2021-11-23 03:23:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:23:59,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:23:59,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:23:59,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 03:23:59,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:23:59,483 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:23:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:23:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -542371695, now seen corresponding path program 1 times [2021-11-23 03:23:59,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:23:59,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692487562] [2021-11-23 03:23:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:23:59,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:23:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:23:59,485 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:23:59,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:23:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:23:59,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 03:23:59,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:23:59,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:23:59,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:24:01,815 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:24:01,815 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 29 treesize of output 31 [2021-11-23 03:24:01,830 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:24:01,830 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 23 treesize of output 23 [2021-11-23 03:24:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:01,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:13,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:24:13,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692487562] [2021-11-23 03:24:13,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692487562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:13,189 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:13,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 03:24:13,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677127489] [2021-11-23 03:24:13,190 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:13,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:24:13,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:24:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:24:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=99, Unknown=5, NotChecked=0, Total=132 [2021-11-23 03:24:13,192 INFO L87 Difference]: Start difference. First operand 221 states and 259 transitions. Second operand has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:24:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:14,714 INFO L93 Difference]: Finished difference Result 352 states and 377 transitions. [2021-11-23 03:24:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:24:14,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-23 03:24:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:14,718 INFO L225 Difference]: With dead ends: 352 [2021-11-23 03:24:14,719 INFO L226 Difference]: Without dead ends: 352 [2021-11-23 03:24:14,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=34, Invalid=117, Unknown=5, NotChecked=0, Total=156 [2021-11-23 03:24:14,720 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 269 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 694 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:14,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1013 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 300 Invalid, 0 Unknown, 694 Unchecked, 1.4s Time] [2021-11-23 03:24:14,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-23 03:24:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 225. [2021-11-23 03:24:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 143 states have (on average 1.6713286713286712) internal successors, (239), 208 states have internal predecessors, (239), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:24:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2021-11-23 03:24:14,733 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 33 [2021-11-23 03:24:14,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:14,734 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2021-11-23 03:24:14,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:24:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2021-11-23 03:24:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:24:14,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:14,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:14,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-23 03:24:14,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:24:14,951 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:24:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 366346711, now seen corresponding path program 1 times [2021-11-23 03:24:14,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:24:14,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361405194] [2021-11-23 03:24:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:14,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:24:14,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:24:14,954 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:24:14,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 03:24:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:15,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:24:15,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:15,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:15,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:24:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361405194] [2021-11-23 03:24:15,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361405194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:15,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:15,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:24:15,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847712274] [2021-11-23 03:24:15,197 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:15,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:24:15,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:24:15,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:24:15,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:24:15,199 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:15,528 INFO L93 Difference]: Finished difference Result 278 states and 329 transitions. [2021-11-23 03:24:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:24:15,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-11-23 03:24:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:15,531 INFO L225 Difference]: With dead ends: 278 [2021-11-23 03:24:15,531 INFO L226 Difference]: Without dead ends: 278 [2021-11-23 03:24:15,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:24:15,532 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 44 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:15,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 331 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:24:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-23 03:24:15,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 222. [2021-11-23 03:24:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 143 states have (on average 1.6293706293706294) internal successors, (233), 205 states have internal predecessors, (233), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:24:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 251 transitions. [2021-11-23 03:24:15,543 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 251 transitions. Word has length 34 [2021-11-23 03:24:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:15,543 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 251 transitions. [2021-11-23 03:24:15,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 251 transitions. [2021-11-23 03:24:15,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:24:15,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:15,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:15,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-23 03:24:15,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:24:15,763 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:24:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1528197373, now seen corresponding path program 1 times [2021-11-23 03:24:15,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:24:15,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256574727] [2021-11-23 03:24:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:15,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:24:15,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:24:15,766 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:24:15,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 03:24:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:15,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:24:15,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:16,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:16,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:24:16,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256574727] [2021-11-23 03:24:16,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256574727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:16,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:16,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:24:16,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165068118] [2021-11-23 03:24:16,058 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:16,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:24:16,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:24:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:24:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:24:16,059 INFO L87 Difference]: Start difference. First operand 222 states and 251 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:16,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:16,093 INFO L93 Difference]: Finished difference Result 266 states and 298 transitions. [2021-11-23 03:24:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:24:16,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-11-23 03:24:16,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:16,098 INFO L225 Difference]: With dead ends: 266 [2021-11-23 03:24:16,099 INFO L226 Difference]: Without dead ends: 266 [2021-11-23 03:24:16,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:24:16,100 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 36 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:16,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 571 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:24:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-23 03:24:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 226. [2021-11-23 03:24:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 147 states have (on average 1.6122448979591837) internal successors, (237), 209 states have internal predecessors, (237), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:24:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2021-11-23 03:24:16,115 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 35 [2021-11-23 03:24:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:16,115 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2021-11-23 03:24:16,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:16,116 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2021-11-23 03:24:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:24:16,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:16,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:16,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:16,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:24:16,331 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:24:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash -129478379, now seen corresponding path program 1 times [2021-11-23 03:24:16,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:24:16,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632346460] [2021-11-23 03:24:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:16,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:24:16,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:24:16,333 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:24:16,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:24:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:16,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:24:16,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:17,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:17,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:24:17,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632346460] [2021-11-23 03:24:17,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632346460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:17,412 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:17,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-23 03:24:17,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862288071] [2021-11-23 03:24:17,412 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:17,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:24:17,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:24:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:24:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:24:17,414 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 03:24:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:17,634 INFO L93 Difference]: Finished difference Result 350 states and 388 transitions. [2021-11-23 03:24:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:24:17,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2021-11-23 03:24:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:17,637 INFO L225 Difference]: With dead ends: 350 [2021-11-23 03:24:17,637 INFO L226 Difference]: Without dead ends: 350 [2021-11-23 03:24:17,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:24:17,638 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 231 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:17,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1180 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2021-11-23 03:24:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-23 03:24:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 238. [2021-11-23 03:24:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 159 states have (on average 1.5723270440251573) internal successors, (250), 221 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:24:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 268 transitions. [2021-11-23 03:24:17,650 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 268 transitions. Word has length 36 [2021-11-23 03:24:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:17,651 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 268 transitions. [2021-11-23 03:24:17,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 03:24:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 268 transitions. [2021-11-23 03:24:17,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:24:17,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:17,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:17,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:17,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:24:17,866 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:24:17,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 189837640, now seen corresponding path program 1 times [2021-11-23 03:24:17,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:24:17,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456744753] [2021-11-23 03:24:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:17,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:24:17,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:24:17,868 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:24:17,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 03:24:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:17,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:24:17,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:18,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:18,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:24:18,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456744753] [2021-11-23 03:24:18,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456744753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:18,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:18,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:24:18,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033606002] [2021-11-23 03:24:18,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:18,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:24:18,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:24:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:24:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:24:18,162 INFO L87 Difference]: Start difference. First operand 238 states and 268 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:18,253 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2021-11-23 03:24:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:24:18,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-23 03:24:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:18,256 INFO L225 Difference]: With dead ends: 264 [2021-11-23 03:24:18,256 INFO L226 Difference]: Without dead ends: 264 [2021-11-23 03:24:18,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:24:18,257 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 166 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:18,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 755 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:24:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-23 03:24:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 240. [2021-11-23 03:24:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 161 states have (on average 1.565217391304348) internal successors, (252), 223 states have internal predecessors, (252), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:24:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 270 transitions. [2021-11-23 03:24:18,269 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 270 transitions. Word has length 40 [2021-11-23 03:24:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:18,270 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 270 transitions. [2021-11-23 03:24:18,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 270 transitions. [2021-11-23 03:24:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:24:18,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:18,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:18,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:18,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:24:18,490 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:24:18,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:18,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974084, now seen corresponding path program 1 times [2021-11-23 03:24:18,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:24:18,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598572564] [2021-11-23 03:24:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:18,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:24:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:24:18,494 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:24:18,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 03:24:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:18,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:24:18,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:18,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:24:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:18,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:19,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:24:19,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598572564] [2021-11-23 03:24:19,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598572564] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:19,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:19,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 03:24:19,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558800239] [2021-11-23 03:24:19,037 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:19,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:24:19,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:24:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:24:19,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:24:19,038 INFO L87 Difference]: Start difference. First operand 240 states and 270 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:20,228 INFO L93 Difference]: Finished difference Result 284 states and 305 transitions. [2021-11-23 03:24:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:24:20,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2021-11-23 03:24:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:20,231 INFO L225 Difference]: With dead ends: 284 [2021-11-23 03:24:20,231 INFO L226 Difference]: Without dead ends: 284 [2021-11-23 03:24:20,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:24:20,233 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 121 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:20,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 801 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 03:24:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-23 03:24:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 239. [2021-11-23 03:24:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 161 states have (on average 1.546583850931677) internal successors, (249), 222 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:24:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 267 transitions. [2021-11-23 03:24:20,243 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 267 transitions. Word has length 42 [2021-11-23 03:24:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:20,244 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 267 transitions. [2021-11-23 03:24:20,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:24:20,244 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 267 transitions. [2021-11-23 03:24:20,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:24:20,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:20,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:20,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:20,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:24:20,463 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:24:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:20,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974083, now seen corresponding path program 1 times [2021-11-23 03:24:20,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:24:20,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021482107] [2021-11-23 03:24:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:20,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:24:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:24:20,465 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:24:20,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 03:24:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:20,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 03:24:20,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:20,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:24:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:20,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:21,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:24:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021482107] [2021-11-23 03:24:21,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021482107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:24:21,818 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:24:21,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 03:24:21,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103223345] [2021-11-23 03:24:21,818 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:24:21,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:24:21,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:24:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:24:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:24:21,820 INFO L87 Difference]: Start difference. First operand 239 states and 267 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:24:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:24:25,589 INFO L93 Difference]: Finished difference Result 382 states and 408 transitions. [2021-11-23 03:24:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:24:25,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2021-11-23 03:24:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:24:25,592 INFO L225 Difference]: With dead ends: 382 [2021-11-23 03:24:25,593 INFO L226 Difference]: Without dead ends: 382 [2021-11-23 03:24:25,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:24:25,594 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 290 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:24:25,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 1251 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 03:24:25,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-23 03:24:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 239. [2021-11-23 03:24:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 161 states have (on average 1.5341614906832297) internal successors, (247), 222 states have internal predecessors, (247), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:24:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 265 transitions. [2021-11-23 03:24:25,603 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 265 transitions. Word has length 42 [2021-11-23 03:24:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:24:25,604 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 265 transitions. [2021-11-23 03:24:25,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:24:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 265 transitions. [2021-11-23 03:24:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:24:25,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:24:25,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:24:25,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 03:24:25,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:24:25,818 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:24:25,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:24:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419631, now seen corresponding path program 1 times [2021-11-23 03:24:25,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:24:25,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222595060] [2021-11-23 03:24:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:24:25,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:24:25,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:24:25,822 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:24:25,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 03:24:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:24:26,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:24:26,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:24:26,131 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:24:26,131 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 25 treesize of output 25 [2021-11-23 03:24:26,505 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 03:24:26,506 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 14 treesize of output 19 [2021-11-23 03:24:26,595 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:24:26,596 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 34 treesize of output 30 [2021-11-23 03:24:26,820 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 03:24:26,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 48 [2021-11-23 03:24:28,249 INFO L354 Elim1Store]: treesize reduction 65, result has 17.7 percent of original size [2021-11-23 03:24:28,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 63 [2021-11-23 03:24:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:24:28,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:24:56,319 INFO L354 Elim1Store]: treesize reduction -1, result has 104.0 percent of original size [2021-11-23 03:24:56,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 68 [2021-11-23 03:25:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:25:16,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:25:16,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222595060] [2021-11-23 03:25:16,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222595060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:16,041 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:25:16,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 15] imperfect sequences [] total 29 [2021-11-23 03:25:16,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491188742] [2021-11-23 03:25:16,041 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:16,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 03:25:16,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:25:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 03:25:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=746, Unknown=17, NotChecked=0, Total=870 [2021-11-23 03:25:16,043 INFO L87 Difference]: Start difference. First operand 239 states and 265 transitions. Second operand has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:25:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:22,455 INFO L93 Difference]: Finished difference Result 249 states and 277 transitions. [2021-11-23 03:25:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:25:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2021-11-23 03:25:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:22,457 INFO L225 Difference]: With dead ends: 249 [2021-11-23 03:25:22,457 INFO L226 Difference]: Without dead ends: 249 [2021-11-23 03:25:22,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=129, Invalid=907, Unknown=20, NotChecked=0, Total=1056 [2021-11-23 03:25:22,459 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 45 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 877 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:22,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2277 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 877 Unchecked, 0.2s Time] [2021-11-23 03:25:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-23 03:25:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2021-11-23 03:25:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 169 states have (on average 1.5207100591715976) internal successors, (257), 230 states have internal predecessors, (257), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:25:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 275 transitions. [2021-11-23 03:25:22,466 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 275 transitions. Word has length 42 [2021-11-23 03:25:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:22,467 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 275 transitions. [2021-11-23 03:25:22,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:25:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 275 transitions. [2021-11-23 03:25:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:25:22,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:22,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:25:22,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:25:22,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:25:22,681 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:25:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419632, now seen corresponding path program 1 times [2021-11-23 03:25:22,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:25:22,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391080157] [2021-11-23 03:25:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:22,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:25:22,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:25:22,683 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:25:22,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 03:25:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:22,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 03:25:22,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:25:23,030 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:25:23,031 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 45 treesize of output 47 [2021-11-23 03:25:23,057 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 03:25:23,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2021-11-23 03:25:23,416 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:25:23,416 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 [2021-11-23 03:25:23,708 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-23 03:25:23,709 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 35 treesize of output 44 [2021-11-23 03:25:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:25:29,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:26:05,831 WARN L227 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:26:19,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:26:19,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391080157] [2021-11-23 03:26:19,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391080157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:26:19,422 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:26:19,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 21 [2021-11-23 03:26:19,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110636470] [2021-11-23 03:26:19,422 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:26:19,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 03:26:19,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:26:19,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 03:26:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=354, Unknown=13, NotChecked=0, Total=462 [2021-11-23 03:26:19,424 INFO L87 Difference]: Start difference. First operand 247 states and 275 transitions. Second operand has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:26:30,761 WARN L227 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:37,191 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:40,771 INFO L93 Difference]: Finished difference Result 253 states and 278 transitions. [2021-11-23 03:26:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:26:40,773 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2021-11-23 03:26:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:40,775 INFO L225 Difference]: With dead ends: 253 [2021-11-23 03:26:40,775 INFO L226 Difference]: Without dead ends: 253 [2021-11-23 03:26:40,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 67.4s TimeCoverageRelationStatistics Valid=123, Invalid=511, Unknown=16, NotChecked=0, Total=650 [2021-11-23 03:26:40,777 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 102 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 647 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:40,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1232 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 647 Unchecked, 0.5s Time] [2021-11-23 03:26:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-23 03:26:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2021-11-23 03:26:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 169 states have (on average 1.514792899408284) internal successors, (256), 230 states have internal predecessors, (256), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:26:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 274 transitions. [2021-11-23 03:26:40,787 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 274 transitions. Word has length 42 [2021-11-23 03:26:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:40,787 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 274 transitions. [2021-11-23 03:26:40,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:26:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 274 transitions. [2021-11-23 03:26:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 03:26:40,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:40,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:40,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:41,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:26:41,005 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:26:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1016480774, now seen corresponding path program 1 times [2021-11-23 03:26:41,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:26:41,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996690282] [2021-11-23 03:26:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:41,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:26:41,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:26:41,007 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:26:41,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 03:26:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:41,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:26:41,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:26:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:26:41,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:26:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:26:41,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:26:41,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996690282] [2021-11-23 03:26:41,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996690282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:26:41,270 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:26:41,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:26:41,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688049599] [2021-11-23 03:26:41,270 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:26:41,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:26:41,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:26:41,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:26:41,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:26:41,272 INFO L87 Difference]: Start difference. First operand 247 states and 274 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:26:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:41,298 INFO L93 Difference]: Finished difference Result 250 states and 274 transitions. [2021-11-23 03:26:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:26:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-23 03:26:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:41,302 INFO L225 Difference]: With dead ends: 250 [2021-11-23 03:26:41,302 INFO L226 Difference]: Without dead ends: 250 [2021-11-23 03:26:41,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:26:41,303 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 37 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:41,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 533 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:26:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-23 03:26:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2021-11-23 03:26:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 169 states have (on average 1.5029585798816567) internal successors, (254), 230 states have internal predecessors, (254), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:26:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 272 transitions. [2021-11-23 03:26:41,311 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 272 transitions. Word has length 43 [2021-11-23 03:26:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:41,312 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 272 transitions. [2021-11-23 03:26:41,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:26:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 272 transitions. [2021-11-23 03:26:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:26:41,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:41,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:41,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:41,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:26:41,526 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-23 03:26:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527314, now seen corresponding path program 1 times [2021-11-23 03:26:41,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:26:41,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127163727] [2021-11-23 03:26:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:41,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:26:41,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:26:41,528 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:26:41,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 03:26:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:41,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-23 03:26:41,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:26:41,845 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 03:26:41,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-23 03:26:42,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-23 03:26:42,274 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-23 03:26:42,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 68 [2021-11-23 03:26:42,455 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:26:42,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 72 [2021-11-23 03:26:42,699 INFO L354 Elim1Store]: treesize reduction 69, result has 39.5 percent of original size [2021-11-23 03:26:42,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 109 [2021-11-23 03:26:43,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 50 [2021-11-23 03:26:43,886 INFO L354 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2021-11-23 03:26:43,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 43 [2021-11-23 03:26:45,060 INFO L354 Elim1Store]: treesize reduction 156, result has 14.3 percent of original size [2021-11-23 03:26:45,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 142 [2021-11-23 03:26:46,364 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 99 treesize of output 83 [2021-11-23 03:26:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:26:47,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:27:43,759 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))) (_ bv1 1))))) is different from false [2021-11-23 03:27:45,890 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |c_ldv_zalloc_#res#1.base| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ldv_zalloc_#res#1.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ldv_zalloc_#res#1.base|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))) (_ bv1 1))) (exists ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))))))))) is different from true [2021-11-23 03:27:48,124 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |c_ldv_zalloc_#t~malloc13#1.base| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ldv_zalloc_#t~malloc13#1.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ldv_zalloc_#t~malloc13#1.base|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))) (_ bv1 1))) (exists ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))))))))) is different from true [2021-11-23 03:27:50,379 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_58|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_58| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_58| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_58|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))) (_ bv1 1))) (exists ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))))))))) is different from true [2021-11-23 03:27:52,475 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22| (_ bv1 1)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store .cse0 |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|)))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ldv_zalloc_#t~malloc13#1.base_57|))))))))))) is different from false [2021-11-23 03:27:52,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 787430 treesize of output 786406 [2021-11-23 03:27:54,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:27:54,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127163727] [2021-11-23 03:27:54,460 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:27:54,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1681057922] [2021-11-23 03:27:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:27:54,461 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:27:54,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:27:54,479 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:27:54,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5b37e-2cc3-44e8-8469-1ee29b810603/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-23 03:27:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:27:54,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 03:27:54,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:27:56,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-23 03:27:56,510 INFO L354 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2021-11-23 03:27:56,511 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 21 treesize of output 26 [2021-11-23 03:27:56,818 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 03:27:56,818 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 45 treesize of output 37 [2021-11-23 03:27:57,555 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-23 03:27:57,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 72 [2021-11-23 03:27:58,813 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-23 03:27:58,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 63 [2021-11-23 03:28:00,812 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:28:00,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 69 [2021-11-23 03:28:04,488 INFO L354 Elim1Store]: treesize reduction 65, result has 17.7 percent of original size [2021-11-23 03:28:04,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 100 [2021-11-23 03:28:07,262 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:28:07,263 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 106 treesize of output 81 [2021-11-23 03:28:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:28:08,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:28:20,247 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 116 treesize of output 112 [2021-11-23 03:28:22,007 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2021-11-23 03:28:22,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 225 treesize of output 245 [2021-11-23 03:28:34,051 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:28:34,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 245 treesize of output 309